Write out the numbers 1 to 50 in 5 rows. Cross out 1. Start at 2 and cross out multiples of 2. That would eliminate all the rest of the even numbers. Go to the next uncrossed-out number (3) and cross out all of its multiples. Some of them will already be crossed out. You can stop by the time you get to eight. All of the uncrossed-out numbers are prime.
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You can find lists of prime numbers online in many places. Just search Google for "list of prime numbers" or something similar.
There are ten prime numbers between 51-100.
There are 168 prime numbers between 1 & 1000.
There are sixteen prime numbers between 201 and 300.
There are sixteen prime numbers between 201 and 300.
15 prime numbers are between 0 and 50
Prime numbers between 71 to 80 = 73 and 79 Therefore there are 2 prime numbers between 71 to 80.
Two prime numbers, 61 and 67, are the only prime numbers between 60 and 70.
There are six prime numbers between 12 and 35: 13,17,19,23,29,31
100
There are 15 prime numbers in between 1 and 52. 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47