ProbabilityHard
Question
5 persons entered the lift cabin on the ground floor of an 8 floor building. Suppose that each of them independently and with equal probability, can leave the cabin at any other floor, starting from the first. The probability that all 5 persons leave at different floors is -
Options
A.
B.
C.
D.
More Probability Questions
Fifteen coupons are numbered 1, 2, ......., 15, respectively Seven coupons are selected at random one at a time with rep...If P(B) = , P(A ∩ B ∩ )= and P( B ∩ = , then P(B ∩ C) is...A quadratic equation is chosen from the set of all quadratic equations which are unchanged by squaring their roots. The ...If an integer is chosen at random from first 100 positive integers, then the probability that the chosen number is a mul...Three athlete A,B and C participate in a race competition. The probability of winning A and winning of B is twice of win...