find the value of x in the expansion of (1+x)^44

if the 21st and 22nd terms in the expansion of (1+x)^44 are equal. Find the value of x 

03/04/13

6papers of which 2 are mathematical how can it be arranged

how can the papers be arranged if: i) the 2mathematical papers are together and (ii) the 2mathematical papers are not consecutive.

in how many ways can a committee of 5 be chosen from 6boys and 4girls

The committee of 5 is to be chosen from 6boys and 4girls and the committe must have exactly 2 girls

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