Thinking: Take the sum of two numbers as a multiple of 17 as the starting point, but because the topic requires an odd number less than 100, and most prime numbers are odd numbers, the sum of two prime numbers can't get an odd number, so one of the numbers is 2. Only three numbers are less than multiples of 100 and 17, and 5 1 and 85. Subtract 2 from them to see which difference is prime.

Answer: 2 and 83

Thinking: The minimum prime number is required to be as large as possible. We can understand that these six numbers are as similar as possible. So we can divide 40 by 6, calculate the average, and then arrange the prime numbers.

Answer: 3

Note: the first question will be correct, and the second question will be deduced by theoretical means, which may be wrong.