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Practice Question #1-least prime number greater than 24

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Director
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GRE 1: 326 Q165 V161
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Practice Question #1-least prime number greater than 24 [#permalink] New post 29 May 2014, 01:26
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Question Stats:

100% (00:16) correct 0% (00:00) wrong based on 11 sessions

Quantity A

The least prime number greater than 24

Quantity B

The greatest prime number less than 28

(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.
[Reveal] Spoiler: OA

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Director
Director
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Joined: 16 May 2014
Posts: 597
GRE 1: 326 Q165 V161
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Kudos [?]: 347 [0], given: 64

Re: Practice Question #1 [#permalink] New post 29 May 2014, 01:27
Expert's post

Explanation



For the integers greater than 24, note that 25, 26, 27, and 28 are not prime numbers, but 29 is a prime number, as are 31 and many other greater integers. Thus, 29 is the least prime number greater than 24, and Quantity A is 29. For the integers less than 28, note that 27, 26, 25, and 24 are not prime numbers, but 23 is a prime number, as are 19 and several other lesser integers. Thus, 23 is the greatest prime number less than 28, and Quantity B is 23. Thus, the correct answer is Choice A, Quantity A is greater.
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Re: Practice Question #1-least prime number greater than 24 [#permalink] New post 16 Jan 2018, 20:31
A is greater, A is 29
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Re: Practice Question #1-least prime number greater than 24 [#permalink] New post 26 Jan 2018, 11:05
A=29... in that moment you know A>B, because B are asking for the greatest prime number less than 28
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Re: Practice Question #1-least prime number greater than 24   [#permalink] 26 Jan 2018, 11:05
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Practice Question #1-least prime number greater than 24

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