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If p and m are odd integers, then which of the following must be an ev
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11 Mar 2021, 03:37
11 Mar 2021, 03:37
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If p and m are odd integers, then which of the following must be an even integer?
Indicate all that apply.
p × m
3p – 2m
2(p + 2m)
p + m
3(3p + 5m)
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Indicate all that apply.
p × m
3p – 2m
2(p + 2m)
p + m
3(3p + 5m)
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
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Re: If p and m are odd integers, then which of the following must be an ev
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11 Mar 2021, 08:16
11 Mar 2021, 08:16
Carcass wrote:
If p and m are odd integers, then which of the following must be an even integer?
Indicate all that apply.
p × m
3p – 2m
2(p + 2m)
p + m
3(3p + 5m)
Indicate all that apply.
p × m
3p – 2m
2(p + 2m)
p + m
3(3p + 5m)
Rules:
odd ± d = even
odd ± even = odd
even ± odd = odd
even ± even = even
(odd)(odd) = odd
(even)(odd) = even
(even)(even) = even
A. \(pm\) = (odd)(odd) = odd
B. \(3p - 2m\) = (odd)(odd) - (even)(odd) = odd - even = odd
C. \(2(p + 2m)\) = even [odd + (even)(odd)] = even {Anything} = even
D. \(p + m\) = odd + odd = even
E. \(3(3p + 5m)\) = odd [(odd)(odd) + (odd)(odd)] = odd [odd + odd] = odd(even) = even
Hence, option C, D, and E
gmatclubot
Re: If p and m are odd integers, then which of the following must be an ev [#permalink]
11 Mar 2021, 08:16
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