Out of 15 consecutive numbers, 2 are chosen at random. The probability that they are both odds or both primes is Options.
A) 1/7 B) 1/5 C) 1/9 D) 1/2 E) 1/1
A leap year has 52 weeks and two days   Total number of cases = 7   Number of favourable cases = 1   i.e., {Saturday, Sunday}   Required Probability = 1/7   Answer: 1/5
<result>B</result>
Out of 15 consecutive numbers, 2 are chosen at random. The probability that they are both odds or both primes is