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Sita claims that the sum of two prime numbers is always even.
Which pair of primes shows that her claim is false?

Class 6Prime and Composite NumbersPlaying with Numbers
  • A3 and 5
  • B2 and 5
  • C5 and 7
  • D11 and 13

Step-by-Step Solution

2 + 5 = 7, which is odd. This happens because 2 is the only even prime; adding it to an odd prime gives an odd sum.
Answer: B) 2 and 5

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