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A number is prime. Which statement must be true about it?

Class 6Prime and Composite NumbersPlaying with Numbers
  • AIt is always odd
  • BIt has exactly two factors
  • CIt is always even
  • DIt has exactly three factors

Step-by-Step Solution

By definition a prime has exactly two factors, 1 and itself. It need not be odd (2 is prime).
Answer: B) It has exactly two factors

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