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M26-17

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Re: M26-17  [#permalink]

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New post 31 May 2017, 05:19
I got it right but in my humble opinion, it should've been made clear if we can use the same no. again or not. Without any doubt gmatclub tests are the best!
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M26-17  [#permalink]

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New post 17 Sep 2017, 05:49
Hi,
I still have hard time understanding, why 77+77+77 can not be considered. this is set of values and what makes it clear that we can not use 7 more than 3 times ?

Just thinking out loud,considering what ever be the reason of not using more than three 7s, can we calculate 77+67+13=157 ?
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Re: M26-17  [#permalink]

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New post 17 Sep 2017, 07:42
jyotipes21@gmail.com wrote:
Hi,
I still have hard time understanding, why 77+77+77 can not be considered. this is set of values and what makes it clear that we can not use 7 more than 3 times ?

Just thinking out loud,considering what ever be the reason of not using more than three 7s, can we calculate 77+67+13=157 ?


We can use numbers from the given set only, which is {1, 3, 6, 7, 7, 7}. So, we can use 1, 3, and 6 only once and 7 thrice.
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Re: M26-17  [#permalink]

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New post 01 Oct 2017, 23:14
This is a high quality question.

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Re: M26-17  [#permalink]

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New post 09 Aug 2018, 08:10
This question is vague. It doesn't say three different integers. The largest could technically be 219 (73 x 3). Am i wrong to think that way?
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Re: M26-17  [#permalink]

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New post 10 Aug 2018, 01:04
hanamana wrote:
This question is vague. It doesn't say three different integers. The largest could technically be 219 (73 x 3). Am i wrong to think that way?


First of all 219 is not prime. Next, we can use numbers from the given set only, which is {1, 3, 6, 7, 7, 7}. So, we can use 1, 3, and 6 only once and 7 thrice.
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DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Re M26-17  [#permalink]

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New post 26 Sep 2018, 22:45
I think this is a high-quality question and the explanation isn't clear enough, please elaborate. Why are the three 2 digit numbers distinct. Why cant it be same. For example : 77,77,77
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Re M26-17 &nbs [#permalink] 26 Sep 2018, 22:45

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