Out of 15 consecutive numbers, 2 are chosen at random. The probability that they are both odds or both primes is\nOptions:\n(A) 10/17\n(B) 10/19\n(C) 46/105\n(D) 11/15\n(E) Cannot be determined
Let's be accurate as possible and think first.
(E)
There is no definite formula for finding prime numbers among 15 consecutive numbers.

Hence the probability cannot be determined.

.

So, the final answer is (E)