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Q: How many prime numbers are greater than 20 but less than 30?

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The prime numbers that are greater than 80 and less than 100 are 83, 89, and 97.

24 of them.

One: 97

23 29.

There are 24. 3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97

There are infinitely many prime numbers which are greater than 30.

There are an infinite amount of prime numbers that are greater than 75.

41 43 47.

Two: 23 29

Two: 23 29

Three: 41 43 47.

83 89 97.

Two: 53 and 59

There are 46 prime numbers less than 200.

There are 25 prime numbers less than 100

They are 239 prime numbers less than 1500.

There are 48 prime numbers less than 220.

There are 27 prime numbers less than 102.

There are 15 prime numbers less than 50

There are 19 numbers in the range, of which 23, 29, 31 and 37 are prime...

All of them except for 23 which is a prime number

There are 15 prime numbers less than 50.

23 is the answer

Seven of them.

7