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# Find S. (1) S^4=S! (2) S^4!=1

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Director
Joined: 26 Feb 2006
Posts: 900

Kudos [?]: 161 [0], given: 0

Find S. (1) S^4=S! (2) S^4!=1 [#permalink]

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14 May 2007, 21:01
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

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Find S.

(1) S^4=S!
(2) S^4!=1

Kudos [?]: 161 [0], given: 0

Senior Manager
Joined: 03 May 2007
Posts: 270

Kudos [?]: 14 [0], given: 0

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14 May 2007, 21:32
(1) is sufficient S^4=S! there is only one solution S=1
(2) is insufficient S^4!=1 is the same as S^24=1 and S can be either 1 or -1

Kudos [?]: 14 [0], given: 0

SVP
Joined: 01 May 2006
Posts: 1794

Kudos [?]: 169 [0], given: 0

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14 May 2007, 23:20
(A)... I agree with Sergey_is_cool

Just in stat2, S=0 is also possible as 0! = 1

Kudos [?]: 169 [0], given: 0

14 May 2007, 23:20
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