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Question
Write 5 pairs of twin prime numbers from 1 to 50.
Solution
If the difference between two co-prime numbers is 2 then, the numbers are said to be twin prime numbers.
Prime no. from 1 to 50:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43 and 47.
Hence, the twin prime numbers from 1 to 50 are (3, 5), (5, 7), (11, 13), (17, 19), (29, 31) and (41, 43).
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[Remark: Two prime numbers whose difference is 2 are called twin primes].
