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14 Sep 2018, 02:02
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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59% (01:45) correct
41%
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If PR is the diameter, what is the length of QP in the circle shown above?
(1) b = 2
(2) PQR is a right angle
Attachment:
image003.jpg [ 3.79 KiB | Viewed 3100 times ]
14 Sep 2018, 08:02
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Bunuel
Here we see three right angle triangles and all are similar triangles
Due to similarity ratio, \(1/a = b/1\)
i.e. \(ab = 1\)
Question: Length of QP = ?
To answer this question we only need the either a or b so that we can calculate hypotenuse of right triangle with hypotenuse PQ
Statement 1: b = 2
SUFFICIENT
Statement 2: PQR is a right angle
We already know this hence this is redundant information
NORT SUFFICIENT
Answer: option A
ShankSouljaBoi
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27 Sep 2018, 20:53
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Hi @GAMTinsight How did you get to ab = 1. Can you please explain the similarity ratio used a bit more ???
Thanks
Thanks
