The prime numbers that are less that 8 are 1, 2, 3, 5, and 7.
The prime numbers less than 100 that contain an 8 are 83 and 89. So, there are two prime numbers that are less than 100 and contain an 8.
The converse statement for "odd natural numbers less than 8 are prime" would be "prime numbers less than 8 are odd." But honey, just because a number is odd doesn't mean it's automatically prime. Watch out for those sneaky even primes like 2, they'll throw a wrench in your logic party.
less than 100
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2, 3, 5, 7
6 and 8 are not prime numbers. Nor are they greater than 40 and less than 50.
You may mean: 3 and 5 are prime numbers that add up to the composite number of 8
17
There are actually 8 prime numbers less than 20: 2, 3, 5, 7, 11, 13, 17, and 19
There are 25 prime numbers less than 100
The prime numbers less then 86 are; 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79 and 83.
There are 46 prime numbers less than 200.