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Prime Factorisation

The sum of pr...

Question

The sum of prime factors of 4620 is:

A

30

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B

28

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C

32

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D

34

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Solution

The correct option is B
28

$4620 = 2^{2} \times 3 \times 5 \times 7 \times 11$
Hence, the prime factors are 2, 3, 5, 7 and 11.
Sum of prime factors = 2 + 3 + 5 + 7 + 11 = 28

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