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Which of the following pairs are both prime numbers?

Class 6Prime and Composite NumbersPlaying with Numbers
  • A17 and 19
  • B21 and 23
  • C25 and 29
  • D33 and 37

Step-by-Step Solution

Both 17 and 19 are prime. In the other pairs one number is composite: .
Answer: A) 17 and 19

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