11th Std Maths Example 4.49 Prove that 10C2+2x10C3+10C4=12C4 Metro Karunagaran 3:09 2 years ago 2 555 Скачать Далее
Combination Algebra nC4 = 210 Find n without Calculator Trick Anil Kumar 6:14 5 years ago 133 089 Скачать Далее