Multiple choice

\text{Highest common factors (HCF) of the numbers 425 and 476 is-}

  1. 4

  2. 5

  3. 17

  4. 51
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

HCF is found by prime factorization. 425 = 5² × 17. 476 = 2² × 7 × 17. The only common prime factor is 17, so HCF = 17. Option A (4) is a factor of 476 but not 425. Option B (5) divides 425 but not 476. Option D (51 = 3 × 17) requires 3 as a factor, which neither number has.

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