How many numerals less than 100 contain the digit five?

I think that since you did not specify a lower bound, the true answer is infinity. I suggest that you give some thought as to rewording the question (unless you were going for infinity). But, let's assume that the lower limit is zero and that we are dealing only with integers. read more

A. 16 B. 17 C. 18 D. 19 E. 20 Kudos for a correct solution. read more

The prime numbers less than 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97. A prime number is any number that is only divisible by itself and 1. read more