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Re: x is a positive integer less than 20. What is the value of x?
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03 Sep 2014, 18:15
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x is a positive integer less than 20. What is the value of x?
(1) x is the sum of two consecutive integers. Well, this one is clearly insufficient. For example, x could be 0 + 1 = 1 or 1 + 2 = 3. Not sufficient.
(2) x is the sum of five consecutive integers. Also, insufficient. For example, x could be 0 + 1 + 2 + 3 + 4 = 10 or 1 + 2 + 3 + 4 +5 = 15. Not sufficient.
(1)+(2) The same here: x could be 1 + 2 + 3 + 4 + 5 = 7 + 8 = 15 or -1 + 0 + 1 + 2 + 3 = 2 + 3 = 5. Not sufficient.
Re: x is a positive integer less than 20. What is the value of x?
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08 Dec 2014, 14:48
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santorasantu wrote:
small question: does'nt statement 1 and 2 contradict each other in this question? isit possible in Gmat?
On the GMAT, two data sufficiency statements always provide TRUE information and these statements never contradict each other.
But , for this question, the statements, do not contradict. x could be 15, so the sum of 5 consecutive integers (1 + 2 + 3 + 4 + 5 = 15) and the sum of 2 consecutive integers (7 + 8 = 15). It can also be 5, again 5 is the the sum of 5 consecutive integers (-1 + 0 + 1 + 2 + 3 = 5) as well as the sum of 2 consecutive integers (2 + 3 = 5).
Re: x is a positive integer less than 20. What is the value of x?
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09 Dec 2014, 05:19
Bunuel wrote:
santorasantu wrote:
small question: does'nt statement 1 and 2 contradict each other in this question? isit possible in Gmat?
On the GMAT, two data sufficiency statements always provide TRUE information and these statements never contradict each other.
But , for this question, the statements, do not contradict. x could be 15, so the sum of 5 consecutive integers (1 + 2 + 3 + 4 + 5 = 15) and the sum of 2 consecutive integers (7 + 8 = 15). It can also be 5, again 5 is the the sum of 5 consecutive integers (-1 + 0 + 1 + 2 + 3 = 5) as well as the sum of 2 consecutive integers (2 + 3 = 5).
Hope it's clear.
Thanks a lot for the clarification and also the explanation
Re: x is a positive integer less than 20. What is the value of x?
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26 Oct 2017, 01:36
St 1: x is the sum of two consecutive integers --> can be a+2, a+3 or a, a+1. So x will change, as we don't know the order of the consecutive numbers
St 2: X is sum of 5 consecutive integers --> can be a+5, a+6, a+7, a+8, a+9 or a+12, a+13..a+17. Again x will change. we don't know the order of consecutive numbers
1) 2) => no clarity on the value of consecutive numbers. hence E.
Re: x is a positive integer less than 20. What is the value of x?
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05 Feb 2019, 07:50
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