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22 Oct 2016, 07:05
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
21% (01:35) correct
79%
(01:07)
wrong
based on 115
sessions
History
Date
Time
Result
Not Attempted Yet
22 Oct 2016, 07:34
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St1: P^5 is even --> P can be an even integer or an irrational number. For example P can be 5th root of 2. Insufficient.
St2: 142P – 82 is even --> P can be an even integer, odd integer or a fraction. Insufficient.
Combining St1 and St2: From St1 we know that P is not a fraction and from St2 we know that P cannot be irrational. Hence P has to be an even integer.
Answer: C
St2: 142P – 82 is even --> P can be an even integer, odd integer or a fraction. Insufficient.
Combining St1 and St2: From St1 we know that P is not a fraction and from St2 we know that P cannot be irrational. Hence P has to be an even integer.
Answer: C
22 Oct 2016, 07:50
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sandeepnb
Statement 1 says \(P^5\) is even . P can be even or irrational number
For example , if \(P^5\) is 2 then P can be 5th root of 2 (that is , 1. something ) or can be even number ( 2, 4 etc )=> Not Sufficient
Statement 2 says 142P – 82 is even . Here P can be even or odd or fraction .
For example, P =1 (odd) then 142 (1) – 82 = 60 (even) ; P= 2 (even) then 142(2) – 82 = 202 (Even) => Not Sufficient
Both Statements combined , then P has to be Even . Hence Sufficient .
Answer is C .
