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What is the sum of the unique prime factors of 49,400?

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What is the sum of the unique prime factors of 49,400?  [#permalink]

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New post 16 Jan 2018, 23:10
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Difficulty:

  45% (medium)

Question Stats:

69% (02:16) correct 31% (02:09) wrong based on 48 sessions

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Re: What is the sum of the unique prime factors of 49,400?  [#permalink]

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New post 16 Jan 2018, 23:14
E

Factors are 19,13,2,2,5,2,5

Sum of unique factors = 19+13+2+5=39


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Re: What is the sum of the unique prime factors of 49,400? &nbs [#permalink] 16 Jan 2018, 23:14
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What is the sum of the unique prime factors of 49,400?

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