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Meera has four raffle tickets numbered 91, 87, 89 and 93. Exactly one ticket number is prime. Which one?

Class 6Prime and Composite NumbersPlaying with Numbers
  • A91
  • B87
  • C89
  • D93

Step-by-Step Solution

91 = and are composite. 89 has no factor other than 1 and itself, so 89 is prime.
Answer: C) 89

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