A committee of six is to be formed by a state governor fr...
A committee of six is to be formed by a state governor from nine state commissioners and three members of the state house of assembly. In how many ways can the members of the committee be chosen so as to include one member of the house of assembly
378 ways
462 ways
840 ways
924 ways
Correct answer is A
3C1×9C5=3!(3−1)!1!×9!(9−5)!5!=3!2!1!×9!4!5!=3×2!2!×1×9×8×7×6×5!4×3×2×1×5!=3×9×2×7=378ways
Sn is the sum of the first n terms of a series given by Sn = n2 - 1. Find the nth term...
\(\begin{array}{c|c} \text{Average hourly earnings(N)} & 5 - 9 & 10 - 14 & 15 - 19 &...
How many students scored at least 25% ...
In the figure, PQ is a parallel to ST and QRS = 40o. Find the value of x...