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Greatest Integer

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by kanha81 » Wed Mar 04, 2009 11:47 am
q: what is the greatest integer that is a sum of four different prime numbers, each less than 30?

1) 67
2) 88
3) 96
4) 104
5) 126

What should be the approach and the take-away? I usually end up wasting time on these type of questions.
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IMO B

by Dream Weaver » Wed Mar 04, 2009 12:15 pm
Hi, I think its pretty straight forward.

The four greatest PRIME NUMBERS less than 30 are 29 + 23 + 19 + 17 = 88.

Whats the OA?
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Re: IMO B

by kanha81 » Wed Mar 04, 2009 12:39 pm
Dream Weaver wrote:Hi, I think its pretty straight forward.

quote]

You're absolutely right. I just didn't see it.
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Re: IMO B

by Mr2Bits » Wed Mar 04, 2009 1:08 pm
kanha81 wrote:
Dream Weaver wrote:Hi, I think its pretty straight forward.

quote]

You're absolutely right. I just didn't see it.
Answer is 88, just work backwards with your primes starting at 29.
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