3, 5
5, 7
11, 13
17, 19
29, 31
41, 43
59, 61
71, 73
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There are eight twin primes between 1 and 100. They are (3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), and (71, 73).
{3,5},{5,7},{11,13},{17,19},{29,31},{41,43},{59,61},{71,73}
3,5 5,7 11,13 17,19 29,31 41,43 59,61 71,73
The twin primes between 1 and 100 are (3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), (71, 73).
25 of them.