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a and b are primes.

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Souhini
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a and b are primes. [#permalink] New post   Updated on: 23 Nov 2024, 23:17
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a and b are primes. \(a+b=12\)

Quantity A
Quantity B
\(b\)
\(8\)




A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given
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Official Answer
B

Originally posted by Souhini on 23 Nov 2024, 21:21.
Last edited by Carcass on 23 Nov 2024, 23:17, edited 2 times in total.
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Souhini
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Re: a and b are primes. [#permalink] New post   23 Nov 2024, 21:24
Hi, I don't understand why the official answer is B. ( source kmf 170).
7+5 = 12, Where both 7 and 5 are primes, where 7 and 5 < 8.
-29+41= 12. where both are also primes but 41>8. I picked answer D.
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a and b are primes. [#permalink] New post   24 Nov 2024, 00:27
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the question tells you to have

a+b

which means that both are positive. Prime numbers are only positive

you cannot subtract. That's why you picked up it wrong
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gmatclubot
a and b are primes. [#permalink]
24 Nov 2024, 00:27
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