Multiple choice

Find the H.C.F. of 95, 323 and 551.

  1. 46835

  2. 95

  3. 19

  4. 1
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C Correct answer
Explanation

The prime factorisation of 95 = 5 $\times$ 19 The prime factorisation of 323 = 17 $\times$ 19 The prime factorisation of 551 = 19 $\times$ 2 ||| |---|---| | 5| 95| | 19| 19| | | 1| | | |   ||| |---|---| | 17| 323| | 19| 19| | | 1| | | |   ||| |---|---| | 19| 551| | 29| 29| | | 1| | | |

H.C.F = Product of the smallest powers of each common prime factor in the numbers. H.C.F (95, 323, 551) = 19

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