MBA
Exam
The real values of ‘a’ for which the quadratic equation 2x2 – (a3 + 8a – 1)x + a2 – 4a = 0 possesses roots of opposite signs are given by 1) a > 5 2) 0 < a < 4 3) a > 0 4) a > 7
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MBA Other Question
During a circus, 4 hats are picked randomly from a trunk having 3 red, 5 black, 4 blue and 6 yellow hats and are given to 4 dwarfs such that each gets 1 hat. all the dwarfs throw their hats in air simultaneously and then come under a hat not necessarily their own. what is probability that at least 2 dwarfs are wearing hat of same colour now and no dwarf has the same hat on his head that he had thrown in the air? 1) 45/136 2) 91/136 3) 83/272 4) none of these
Find highest power of 7 which devides 81!