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
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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