- A2
- B6
- C1
- D3
Step-by-Step Solution
Primes on the strip: 53, 59, 61, 67, 71, 73. Pairs differing by 2: (59, 61) and (71, 73), so 2 pairs. 6 is the number of primes, not pairs.
Answer: A) 2
Twin primes are pairs of primes that differ by 2, like 11 and 13. How many pairs of twin primes are there on this number strip?
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