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Point K = (A, 0), Point G = (2A + 4, (2A + 9)^(1/2)). Is the distance
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Updated on: 19 Aug 2018, 20:00
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Point K = (A, 0), Point G = (2A + 4, \(\sqrt{2A + 9}\)). Is the distance between point K and G prime? (1) A^2 – 5A – 6 = 0 (2) A > 2
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Originally posted by TheKingInTheNorth on 09 Jun 2017, 21:49.
Last edited by Bunuel on 19 Aug 2018, 20:00, edited 1 time in total.
Renamed the topic and edited the question.



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Re: Point K = (A, 0), Point G = (2A + 4, (2A + 9)^(1/2)). Is the distance
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09 Jun 2017, 22:44
abhisheknandy08 wrote: Point K = (A, 0), Point G = 2A 4, 2A9. Is the distance between point K and G prime? (1) A2 – 5A – 6 = 0 (2) A > 2 What is Point G, it is not clear. Kindly check the question stem.
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Re: Point K = (A, 0), Point G = (2A + 4, (2A + 9)^(1/2)). Is the distance
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10 Jun 2017, 00:18
Correct version of the question .
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Re: Point K = (A, 0), Point G = (2A + 4, (2A + 9)^(1/2)). Is the distance
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10 Jun 2017, 00:35
Formula used: Distance between points K(x1,y1) and G(x2,y2) = \(\sqrt{(x1  x2)^2 + (y1  y2)^2}\)On analyzing statement 1 independently, we get A = 6,1 When A=6, Points K(6,0) and G(16,\(\sqrt{21}\)) have a distance of 11(a prime number) But if A=1, Points K(1,0) and G(2,\(\sqrt{7}\)) have a distance of 4(not a prime number) Insufficient. Similarly on analyzing statement 2 independently, using A = 3,6 Since we have got the distance, when A=6 to be prime. Let analyze if A=3 Points K(3,0) and G(10,\(\sqrt{15}\)) have a distance of 8(not a prime number) Insufficient. But, on combining both the statements, we can clearly say A=6, which has a prime number as the distance between K and G. Sufficient(Option C)
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Re: Point K = (A, 0), Point G = (2A + 4, (2A + 9)^(1/2)). Is the distance
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16 Jun 2017, 14:52
In order to solve this question we need a restriction on the possibilities for X statement 1 and 2 individual fail to provide criteria that allow us to narrow down a discrete value of "a" but statement 1 and 2 together allow us to factor the equation in one and asses one value of a.
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Re: Point K = (A, 0), Point G = (2A + 4, (2A + 9)^(1/2)). Is the distance
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19 Aug 2018, 20:01
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Re: Point K = (A, 0), Point G = (2A + 4, (2A + 9)^(1/2)). Is the distance &nbs
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