Канал: D K SIR

write an ap for number of triangles write nth term also which figure has 61 matchsticks

write an ap for number of triangles write nth term also which figure has 61 matchsticks

abc is a right triangle assuming ab as a diameter a circle is drawn ....

abc is a right triangle assuming ab as a diameter a circle is drawn ....

two different dice are rolled simultaneously. find the probability that the sum of the numbers on ..

two different dice are rolled simultaneously. find the probability that the sum of the numbers on ..

all red face cards are removed from a pack of playing cards.....

all red face cards are removed from a pack of playing cards.....

probability of selecting a red ball at random from a jar is 1/4 ....

probability of selecting a red ball at random from a jar is 1/4 ....

probability of selecting blue marbles at random from a jar is 1 by 3 and green marble from......

probability of selecting blue marbles at random from a jar is 1 by 3 and green marble from......

getting rotten apples from hip of..,..

getting rotten apples from hip of..,..

one card is drawn at random from well shuffled pack of 52 cards ..

one card is drawn at random from well shuffled pack of 52 cards ..

lottery ticket 5 prizes are there and 245 are blanks

lottery ticket 5 prizes are there and 245 are blanks

a letter of English alphabet is chosen at random find the probability of getting a consonant......

a letter of English alphabet is chosen at random find the probability of getting a consonant......

two coins tossed simultaneously the probability of getting exact one head at least one head at most.

two coins tossed simultaneously the probability of getting exact one head at least one head at most.

a is tossed ones what is the probability of getting tail?

a is tossed ones what is the probability of getting tail?

group data mode how to find mode of group data

group data mode how to find mode of group data

10th statistics median question number 14 how to find median when less than series is given

10th statistics median question number 14 how to find median when less than series is given

the median of the following frequency distribution is 32.5 find values of F1 and F2

the median of the following frequency distribution is 32.5 find values of F1 and F2

median in short, find the median class x math median

median in short, find the median class x math median

class 10th statistics median find the missing frequency if the median is given

class 10th statistics median find the missing frequency if the median is given

median class x maths statistics

median class x maths statistics

in the given figure PQ is a chord of circle with centre o and pt is tangent

in the given figure PQ is a chord of circle with centre o and pt is tangent

in figure o is the centre of the circle and PB are tangents so that a cyclic quadrilateral

in figure o is the centre of the circle and PB are tangents so that a cyclic quadrilateral

in the given figure a circle inscribed in a triangle ABC touches the sides ab bc and ac pointe d..

in the given figure a circle inscribed in a triangle ABC touches the sides ab bc and ac pointe d..

the given figure two tangents rq and rp are drawn an external point p to the circle with centre o..

the given figure two tangents rq and rp are drawn an external point p to the circle with centre o..

how to submit assessment through wise app .....

how to submit assessment through wise app .....

tangents drawn from point p prove that pboa paob are concyclic

tangents drawn from point p prove that pboa paob are concyclic

q7

q6

circles are of radii is 6.5 and 2.5 CM length of chord of the larger circle which touches smaller ..

circles are of radii is 6.5 and 2.5 CM length of chord of the larger circle which touches smaller ..

tangent drawn to a circle of radius 8 CM 17 cm away from the centre of the circle

tangent drawn to a circle of radius 8 CM 17 cm away from the centre of the circle

from eternal point of a circle tangents drawn to the circle equal in

from eternal point of a circle tangents drawn to the circle equal in

class x circle tangent is perpendicular to the radius through the point of contact..

class x circle tangent is perpendicular to the radius through the point of contact..

if the sum of first n terms of two APs..

if the sum of first n terms of two APs..

an ap it is given that S5 + S7 = 167 and S10 = 235 find the AP where Sn denotes....

an ap it is given that S5 + S7 = 167 and S10 = 235 find the AP where Sn denotes....

find the sum of the following (1-1/n) + (1-2/n) + ( 1- 3/n) + .... n times

find the sum of the following (1-1/n) + (1-2/n) + ( 1- 3/n) + .... n times

the 12th term of AP is -13 and the sum of its first four terms is 24 find the sum of...

the 12th term of AP is -13 and the sum of its first four terms is 24 find the sum of...

first and the last term of AP is 5 and 45 respectively if the sum of all its terms 4....

first and the last term of AP is 5 and 45 respectively if the sum of all its terms 4....

the sum of all three digit natural numbers which are divisible by 13

the sum of all three digit natural numbers which are divisible by 13

all natural numbers between 200 and 400 which are divisible by 7

all natural numbers between 200 and 400 which are divisible by 7

how many terms of AP 63, 60, 57, 54.... taken so that their sum is 693

how many terms of AP 63, 60, 57, 54.... taken so that their sum is 693

sum of first n terms is 5n²/2 + 3n/2. 10th term and 20 th term

sum of first n terms is 5n²/2 + 3n/2. 10th term and 20 th term

if mth term of AP is 1 by n and nth term of AP is 1 by m then find sum of n terms

if mth term of AP is 1 by n and nth term of AP is 1 by m then find sum of n terms

sum of n terms of AP 3n² + 5 then find its common difference

sum of n terms of AP 3n² + 5 then find its common difference

the next term of AP square root of 8 square root of 18 square root of 32

the next term of AP square root of 8 square root of 18 square root of 32

(2p+1), 13 and (5p-3) are in AP then find the value of p

(2p+1), 13 and (5p-3) are in AP then find the value of p

4/5, a and 2 are in AP then find the value of a

4/5, a and 2 are in AP then find the value of a

if the first term of AP is 30 and the common difference is q then find its 10th term

if the first term of AP is 30 and the common difference is q then find its 10th term

how many 3 digit natural number are divisible by 9

how many 3 digit natural number are divisible by 9

if the sum of m terms are to 2m² + 3m what is its second

if the sum of m terms are to 2m² + 3m what is its second

find the sum of n terms of AP a, 3a, 5a

find the sum of n terms of AP a, 3a, 5a

if a denotes nth term of AP 2, 7, 12, 17 find the value of a30 - a20

if a denotes nth term of AP 2, 7, 12, 17 find the value of a30 - a20

find four numbers in AP whose sum is 28 and the sum of whose squares is 216

find four numbers in AP whose sum is 28 and the sum of whose squares is 216

the angles of a quadrilateral are in AP whose common difference is 10 degree...

the angles of a quadrilateral are in AP whose common difference is 10 degree...

sum of rupees 2800 is used to award four prizes...

sum of rupees 2800 is used to award four prizes...

find three numbers in AP whose sum is 15 and product is 80

find three numbers in AP whose sum is 15 and product is 80

find the value of x for which number is 5 x + 2, 4 x - 1 and X + 2 are in AP

find the value of x for which number is 5 x + 2, 4 x - 1 and X + 2 are in AP

determine k so that 3k -2, 4K - 6 and k + 2 are three consecutive terms of an ap...

determine k so that 3k -2, 4K - 6 and k + 2 are three consecutive terms of an ap...

find the common difference of the AP whose first term is 5 and the sum of first four terms is half..

find the common difference of the AP whose first term is 5 and the sum of first four terms is half..

if the 7th term of AP is -4 and 13th term is - 16 then find the AP. RS Agrawal ex 11A q26

if the 7th term of AP is -4 and 13th term is - 16 then find the AP. RS Agrawal ex 11A q26

sunflower Convent School .

sunflower Convent School .

linear equations in two variables

linear equations in two variables

Ex1bq11

Ex1bq11

Ex1b q. 8

Ex1b q. 8

Ex1b q10

Ex1b q10

For any positive integer n prove that n³ - n is divisible by 6

For any positive integer n prove that n³ - n is divisible by 6

X math rs agrawal ex1A

X math rs agrawal ex1A

show that Every positive integer is either even or odd

show that Every positive integer is either even or odd

X math ex- 1.1 q1 & q2

X math ex- 1.1 q1 & q2

Euclid's division lemma

Euclid's division lemma

X math ex- 7.3 q6

X math ex- 7.3 q6

X MATH Ex-7.3 q 7

X MATH Ex-7.3 q 7

Area of triangle exercise 7.3 question number 3

Area of triangle exercise 7.3 question number 3

Area of triangle exercise 7.2 question number 2

Area of triangle exercise 7.2 question number 2

Area of triangle ex 7.3 q 1 (ii)

Area of triangle ex 7.3 q 1 (ii)

A villager itwaari has a plot of Land of the shape of quadrilateral ....

A villager itwaari has a plot of Land of the shape of quadrilateral ....

Area of triangle in co-ordinate geometry

Area of triangle in co-ordinate geometry

ABCD is a trapezium in which diagonal AC and BD intersect at point P prove that ar(bod) = ar(boc)

ABCD is a trapezium in which diagonal AC and BD intersect at point P prove that ar(bod) = ar(boc)

ABCD is parallelogram side ab is produced to p a line parallel to CP through point a is drawn...

ABCD is parallelogram side ab is produced to p a line parallel to CP through point a is drawn...

Find the ratio in which x-axis divides the joining line segment of (-4,5) and (1,-5)

Find the ratio in which x-axis divides the joining line segment of (-4,5) and (1,-5)

Find the ratio in which (- 1,6) divides the joining line segment (-3, 10) and (6, -8

Find the ratio in which (- 1,6) divides the joining line segment (-3, 10) and (6, -8

Xy is parallel to side BC of triangle ABC... Prove that area of abe is equal to area of acf

Xy is parallel to side BC of triangle ABC... Prove that area of abe is equal to area of acf

Point d and e are on the sides ab and ac of triangle ABC such that area of the DBC is equal .

Point d and e are on the sides ab and ac of triangle ABC such that area of the DBC is equal .

Find the coordinates of the points of trisection of the line segment joining 4 - 1 and -2 -3

Find the coordinates of the points of trisection of the line segment joining 4 - 1 and -2 -3

Use of section formula in co-ordinate geometry

Use of section formula in co-ordinate geometry

D E and f are midpoints of sides ab bc and ac of triangle ABC...

D E and f are midpoints of sides ab bc and ac of triangle ABC...

Triangle ABC and triangle ABC d on same base ab CD is bisected by a d..

Triangle ABC and triangle ABC d on same base ab CD is bisected by a d..

In triangle abc e is the midpoint of median ad prove that area of triangle bed = 1/4 ar(ABC)

In triangle abc e is the midpoint of median ad prove that area of triangle bed = 1/4 ar(ABC)

In triangle abc e is any point on median ad of a triangle ABC...

In triangle abc e is any point on median ad of a triangle ABC...

Median divides the triangle into two triangles in equal area

Median divides the triangle into two triangles in equal area

Distance formula

Distance formula

A farmer was having a field in the form of parallelogram ...

A farmer was having a field in the form of parallelogram ...

To prove that area of pqrs is equal to area of triangle axs is equal to half of area of pqrs

To prove that area of pqrs is equal to area of triangle axs is equal to half of area of pqrs

Given that BD/CD = AB/AC prove that AD is bisector of angle A

Given that BD/CD = AB/AC prove that AD is bisector of angle A

Abcd is parallelogram ab = 16 cm ....

Abcd is parallelogram ab = 16 cm ....

Prove that triangle APC is similar to triangle BPD

Prove that triangle APC is similar to triangle BPD

Prove that the sum of squares of diagonals of parallelogram is equal to the sum of the squares of...

Prove that the sum of squares of diagonals of parallelogram is equal to the sum of the squares of...

X MATH by DK Sir

X MATH by DK Sir

Triangle ABC right angled at b DN perpendicular on AB, DM perpendicula on BC, BD perpendicular on AC

Triangle ABC right angled at b DN perpendicular on AB, DM perpendicula on BC, BD perpendicular on AC

In ∆ ABC right angled at B BD perpendicular on AC, DM perpendicular on BC and DN perpendicular on AB

In ∆ ABC right angled at B BD perpendicular on AC, DM perpendicular on BC and DN perpendicular on AB

Figures on the same base and between same parallels

Figures on the same base and between same parallels

PS is angle bisector of angle QPR prove that QP/ PR = QS/ SR

PS is angle bisector of angle QPR prove that QP/ PR = QS/ SR

Tick the correct answer and justify in ∆ ABC , AB = 6√3 cm, BC = 6 cm and AC = 12 cm the angle B....

Tick the correct answer and justify in ∆ ABC , AB = 6√3 cm, BC = 6 cm and AC = 12 cm the angle B....

In an equilateral triangle prove that three times of square of one side is equal to four times the..

In an equilateral triangle prove that three times of square of one side is equal to four times the..

IX MATH Ex- 8.2 Q. 7

IX MATH Ex- 8.2 Q. 7

Show that the line segment joining the midpoints of the opposite sides of quadrilateral bisect each

Show that the line segment joining the midpoints of the opposite sides of quadrilateral bisect each

ABD is a triangle right angled at A, AC perpendicular on BD..

ABD is a triangle right angled at A, AC perpendicular on BD..

PQR is a triangle right angled at P and M is a point on QR such that PM perpendicular on QR SHOW

PQR is a triangle right angled at P and M is a point on QR such that PM perpendicular on QR SHOW

Ix math

Ix math

Pythagoras theoram

Pythagoras theoram

IX MATH Mid point Theoram

IX MATH Mid point Theoram

D, E & F are midpoints of sides AB BC and AC find the ratio of areas of ∆ABC and∆ DEF

D, E & F are midpoints of sides AB BC and AC find the ratio of areas of ∆ABC and∆ DEF

Ix math

Ix math

In triangle ABC and DEF IF AB = DE AB II DE BC = EF BC II EF then prove that .....

In triangle ABC and DEF IF AB = DE AB II DE BC = EF BC II EF then prove that .....

If the area of two similar triangles are equal, prove that they are congruent.

If the area of two similar triangles are equal, prove that they are congruent.

In figure ABC and DBC are two triangles on the same base BC if ad intersect BC at 0

In figure ABC and DBC are two triangles on the same base BC if ad intersect BC at 0

In IIgm ABCD two points P and Q are on the diagonal BD such that BQ = DP

In IIgm ABCD two points P and Q are on the diagonal BD such that BQ = DP

Theoram: ratio of areas of similar ∆s is equal to square of ratio of their corresponding sides.

Theoram: ratio of areas of similar ∆s is equal to square of ratio of their corresponding sides.

CD and GH are respectively the bisectors of angle ACB and angle EGH such that D and H lie on sides..

CD and GH are respectively the bisectors of angle ACB and angle EGH such that D and H lie on sides..

ABC and AMP are two right ∆s, right angled ant B and M respectively..

ABC and AMP are two right ∆s, right angled ant B and M respectively..

Prove that diagonals of square bisect each other.

Prove that diagonals of square bisect each other.

Show that if the diagonal of a quadrilateral bisect each other at right.

Show that if the diagonal of a quadrilateral bisect each other at right.

In figure triangle ODC similar to triangle OBA ...

In figure triangle ODC similar to triangle OBA ...

Basic concept of Quadrilateral

Basic concept of Quadrilateral

A B and C are points on OP, OQ and OR such that AB II PQ and AC II PR..

A B and C are points on OP, OQ and OR such that AB II PQ and AC II PR..

Prove that a line drawn from mid point of one side of a triangle parallel to another side bisects...

Prove that a line drawn from mid point of one side of a triangle parallel to another side bisects...

ABC is a triangle, locate a point which is equidistant from all sides of the∆ABC.

ABC is a triangle, locate a point which is equidistant from all sides of the∆ABC.

ABC is a triangle locate a point in the interior of ∆ ABC...

ABC is a triangle locate a point in the interior of ∆ ABC...

Show that of all line segments drawn from a given point not on it the perpendicular line segment ..

Show that of all line segments drawn from a given point not on it the perpendicular line segment ..

If a line is drawn parallel to one side of a triangle to intersect the other two sides....

If a line is drawn parallel to one side of a triangle to intersect the other two sides....

X MATH by D K Sir

X MATH by D K Sir

The houses of a row are numbered consecutively from 1 to 49. Show that there is a value of x...

The houses of a row are numbered consecutively from 1 to 49. Show that there is a value of x...

A ladder has rungs 25 CM apart the rungs increases uniformly in length from 45cm at the bottom....

A ladder has rungs 25 CM apart the rungs increases uniformly in length from 45cm at the bottom....

The sum of the 3rd and the 7th term of an ap is 6 and their product is 8..

The sum of the 3rd and the 7th term of an ap is 6 and their product is 8..

Which term of the AP: 121, 117, 113... is its first negative term?

Which term of the AP: 121, 117, 113... is its first negative term?

Show that in a right angled triangle hypotenuse is the longest side.

Show that in a right angled triangle hypotenuse is the longest side.

Sides AB and AC of a ∆ABC are extended to points P and Q..

Sides AB and AC of a ∆ABC are extended to points P and Q..

BE end CF are two equal altitudes of triangle ABC

BE end CF are two equal altitudes of triangle ABC

In a potato race a bucket is placed at the starting point which is 5 metres from the first potato...

In a potato race a bucket is placed at the starting point which is 5 metres from the first potato...

200 logs are stacked, 20 logs in the bottom row, 19 in the next, 18 logs in next and so on....

200 logs are stacked, 20 logs in the bottom row, 19 in the next, 18 logs in next and so on....

A spiral is made up of successive semicircles with centres.......

A spiral is made up of successive semicircles with centres.......

Two sides AB, BC and median of a triangle ABC are respectively equal to sides PQ, QR and medial PN.

Two sides AB, BC and median of a triangle ABC are respectively equal to sides PQ, QR and medial PN.

In a school students thought of planting trees in....

In a school students thought of planting trees in....

Rupees 700 is to be used to give cash prizes...

Rupees 700 is to be used to give cash prizes...

∆ABC and ∆ DBC are two isosceles triangles on the same base BC and vertices A and D are on the same.

∆ABC and ∆ DBC are two isosceles triangles on the same base BC and vertices A and D are on the same.

A contract on construction job specifies a penalty for delay of completion......

A contract on construction job specifies a penalty for delay of completion......

Find the sum of the first 40 positive integers divisible by 6.

Find the sum of the first 40 positive integers divisible by 6.

If the sum of the first n terms of an AP is 4n - n2, what is the first term?....

If the sum of the first n terms of an AP is 4n - n2, what is the first term?....

Show that angles of an equilateral triangle are 60 degree each

Show that angles of an equilateral triangle are 60 degree each

ABC is a right angle triangle in which angle A =90 degree and AB =AC

ABC is a right angle triangle in which angle A =90 degree and AB =AC

If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289......

If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289......

Show that a1, a2 , .........., an form an AP

Show that a1, a2 , .........., an form an AP

X math ex- 5.3 q6

X math ex- 5.3 q6

Ix math ex -7.2 q4

Ix math ex -7.2 q4

ABC is an isosceles triangle in which altitudes BE and CF....

ABC is an isosceles triangle in which altitudes BE and CF....

Sum of n terms of an AP

Sum of n terms of an AP

Ix math ex 7.2 q2

Ix math ex 7.2 q2

Ix math ex - 7.2 q1

Ix math ex - 7.2 q1

X Math Ex - 5.2, Q. 1 & Q. 2

X Math Ex - 5.2, Q. 1 & Q. 2

Ix math ch 4 linear equation in two variable ex- 4.3 q3, 4 and 5

Ix math ch 4 linear equation in two variable ex- 4.3 q3, 4 and 5

Ix math chapter 4 ex- 4.3 q1 and q2

Ix math chapter 4 ex- 4.3 q1 and q2

Ix math ch 4 ex- 4.1 and 4.2

Ix math ch 4 ex- 4.1 and 4.2

Arithmetic progression class 10th chapter 5 question no. 3 and 4

Arithmetic progression class 10th chapter 5 question no. 3 and 4

Arithmetic progression class x

Arithmetic progression class x

Arithmetic progression introduction

Arithmetic progression introduction