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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
73% (01:35) correct
27%
(01:43)
wrong
based on 110
sessions
History
Date
Time
Result
Not Attempted Yet
Is the two-digit prime number p equal to 17?
(1) p² is greater than 250.
(2) p=n²+1, where n is an integer.
I don't agree with the OA, the explanation for OA was that 17 is the only prime number that is one larger than a square, but e.g 37 is one larger than the square of 6.
IMO it should be E.
Can anybody elaborate please?
(1) p² is greater than 250.
(2) p=n²+1, where n is an integer.
I don't agree with the OA, the explanation for OA was that 17 is the only prime number that is one larger than a square, but e.g 37 is one larger than the square of 6.
IMO it should be E.
Can anybody elaborate please?
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29 Feb 2012, 12:24
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OA is clearly wrong. Both 17 and 37 satisfy statements (1) and (2): 17^2>250, 37^2>250 and 17=4^2+1, 37=6^2+1.
Answer: E.
02 Jul 2015, 06:37
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