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If p is a positive integer, which of the following could be
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08 Mar 2020, 10:59
08 Mar 2020, 10:59
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Question Stats:
87% (00:48) correct
12% (00:50) wrong based on 31 sessions
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If p is a positive integer, which of the following could be a prime number?
(A) 8p
(B) 8p + 1
(C) 8p + 2
(D) 8p + 4
(E) 8p + 6
Kudos for the right answer and explanation
(A) 8p
(B) 8p + 1
(C) 8p + 2
(D) 8p + 4
(E) 8p + 6
Kudos for the right answer and explanation
Re: If p is a positive integer, which of the following could be
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09 Mar 2020, 22:27
09 Mar 2020, 22:27
Prime number is one which is only divisible by 1 and itself.
All the options except B when divided by 2 leave remainder 0 but B doesn't.
We can also solve this by choosing a value for 'p' checking options
All the options except B when divided by 2 leave remainder 0 but B doesn't.
We can also solve this by choosing a value for 'p' checking options
Re: If p is a positive integer, which of the following could be
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09 Mar 2020, 22:45
09 Mar 2020, 22:45
B. The others can all have a factor of 2 pulled out
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