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Quantitative Aptitude
Factors of a Number
Q. smallest v...
Question
Q. smallest value of n, for which 2n+1 is not a prime is.
A
1
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B
2
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C
3
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D
4
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E
None of these
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Solution
The correct option is
C
3
For n = 4 2n+1 = 9 which is not prime
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2
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