- A2 and 3
- B3 and 5
- C5 and 7
- D11 and 13
Step-by-Step Solution
2 and 3 are both prime and differ by 1. They are the only such pair, since any two consecutive numbers other than this include an even composite.
Answer: A) 2 and 3
Two prime numbers whose difference is 1 are called consecutive primes if both are prime. Which pair of primes has a difference of exactly 1?
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