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What is the least integer that is a sum of three different primes each

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What is the least integer that is a sum of three different primes each  [#permalink]

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New post 21 May 2017, 11:26
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  5% (low)

Question Stats:

86% (00:51) correct 14% (01:12) wrong based on 113 sessions

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What is the least integer that is a sum of three different primes each  [#permalink]

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New post 21 May 2017, 11:28
carcass wrote:
What is the least integer that is a sum of three different primes each greater than 20 ?

(A) 69

(B) 73

(C) 75

(D) 79

(E) 83


A Prime number is a positive integer with exactly two distinct natural number divisors: 1 and itself.

Primes greater than 20 are 23, 29, 31, 37, ...

The least integer that is a sum of three different primes each greater than 20 is thus 23 + 29 + 31 = 83.

Answer: E.

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Re: What is the least integer that is a sum of three different primes each  [#permalink]

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New post 12 Apr 2019, 05:29
Is there a more efficient method than listing primes, adding them, and matching it to the answer choices?
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Re: What is the least integer that is a sum of three different primes each   [#permalink] 12 Apr 2019, 05:29
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What is the least integer that is a sum of three different primes each

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