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Practice Question #1-least prime number greater than 24

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Director
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Joined: 16 May 2014
Posts: 597
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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Difficulty:

  5% (low)

Question Stats:

100% (00:00) correct 0% (00:00) wrong based on 2 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.
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Director
Director
User avatar
Joined: 16 May 2014
Posts: 597
GRE 1: 326 Q165 V161
Followers: 72

Kudos [?]: 313 [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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If you find this post helpful, please press the kudos button to let me know ! :)

Re: Practice Question #1   [#permalink] 29 May 2014, 01:27
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Practice Question #1-least prime number greater than 24

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