MBA Exam

The number of terms in the expansion (a+b+c+d)^20

1) 1671
2) 1717
3) 1771
4) 7171

Read Solution (Total 2)

here n=20,m=4
formula is (m+n-1)C(n-1)
so it will be 23C3=1771
11 years agoHelpfull: Yes(1) No(0)

Number of terms =(20+4-1)c(4-1) = 23c3 = 1771
11 years agoHelpfull: Yes(0) No(0)

MBA Other Question

P takes a days to complete a piece of work. Q takes d days more than P to complete the work. R takes d days more than Q to complete the work. S takes d days less than P to complete the work. T takes d days less than S to complete the work. Which of the following does not hold true? (d > 0)

1) R and S working together take more time to complete the work than Q and T do.
2) Q and S working together take more time to complete the work than R and T do.
3) Q and S working together take less time to complete the work than R and T do
4) R and T working together take less time then P and S do
The set S has 5 elements. In how many ways can one select two (possibly identical) subsets of S whose union is S?

1) 32
2) 63
3) 64
4) 93
5) 122