MBA Exam

x and y are complex numbers such that x2 + y2 = 7, x3 + y3 = 10. What is the smallest possible real value of x + y?

1) -5
2) -1
3) 6
4) None of these

Read Solution (Total 0)

MBA Other Question

There are 30 cards. Each card has a single number written on it, such that all the integers from 1 to 30 are represented in the cards. Two cards (which have numbers a and b written on them) are arbitrarily chosen, and are removed from the pack. The above two cards are replaced with a single card, on which the number (ab + a + b) is written. This constitutes one operation. After 29 such operations, what will be the number written on the sole surviving card?1) 31! − 1 2) 15 × 31 3) 30! − 1 4) 31! + (15 × 31) 5) 30! + (15 × 31) − 1

1) 1
2) 2
3) 3
4) 4
5) 5
Two distinct A and B are selected from set{1,2,3,4....39,40}. Find probability that AB is divisible by 3.

1) (13c1*27c1+13c2)/40C2
2) 3/10
3) (13c1*39c1)/40c2
4) 13*39/40*39