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Question
Which of the following are not twin-primes?
(a) 3,5
(b) 5,7
(c) 11,13
(d) 17,23
(a) 3,5
(b) 5,7
(c) 11,13
(d) 17,23
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Solution
(d) 17, 23
Pairs of prime numbers that differ by 2 are called twin primes.
The difference between 17 and 23 is 6.
Hence, 17 and 23 are not twin primes.
Pairs of prime numbers that differ by 2 are called twin primes.
The difference between 17 and 23 is 6.
Hence, 17 and 23 are not twin primes.
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