23. a prime number is a number that
is evenly divisible only by 1 and itself. the prime
numbers less than 100 are listed below.
2 3 5 7 11 13 17 19 23 29 31
37 41 43 47 53 59 61 67 71 73 79 83 89 97
choose one of these numbers at random. find the
probability that
a. the number is odd
b. the sum of the digits is odd
c. the number is greater than 70

explain