3,5;5,7;11,13;17,19;?,?;41,43
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29 31
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23 25
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23 27
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21 23
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27 29
A
Correct answer
Explanation
The sequence lists pairs of twin primes. Following (17,19), the next pair of prime numbers with a difference of two is (29,31). Other options like (23,25) or (27,29) contain non-prime numbers (25 and 27).