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Nisha wants to find a prime number p such that p, p+2 and p+4 are all prime (a prime triplet with gap 2).
Which value of p works?

Class 6Prime and Composite NumbersPlaying with Numbers
  • A3
  • B5
  • C7
  • D11

Step-by-Step Solution

For p = 3: 3, 5, 7 are all prime. For any other p one of p, p+2, p+4 is a multiple of 3 and greater than 3, hence composite.
Answer: A) 3

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