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ALGEBRA

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Joined: 01 Jul 2019
Posts: 8
ALGEBRA  [#permalink]

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New post 09 Aug 2019, 13:39
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Difficulty:

  55% (hard)

Question Stats:

60% (02:09) correct 40% (02:14) wrong based on 10 sessions

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If n is a positive integer and r is the remainder when (n – 1)(n + 1) is divided by 24, what is the value of r ?

(1) n is not divisible by 2.
(2) n is not divisible by 3.

Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

EACH statement ALONE is sufficient.

Statements (1) and (2) TOGETHER are NOT sufficient.
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Re: ALGEBRA  [#permalink]

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New post 09 Aug 2019, 23:26
VISHNUNAMBI wrote:
If n is a positive integer and r is the remainder when (n – 1)(n + 1) is divided by 24, what is the value of r ?

(1) n is not divisible by 2.
(2) n is not divisible by 3.

Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

EACH statement ALONE is sufficient.

Statements (1) and (2) TOGETHER are NOT sufficient.


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Re: ALGEBRA   [#permalink] 09 Aug 2019, 23:26
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ALGEBRA

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