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# Find the standard deviation of set X (1) all the members of

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Joined: 03 Feb 2003
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Find the standard deviation of set X (1) all the members of [#permalink]  08 Jul 2004, 04:47
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Find the standard deviation of set X

(1) all the members of X are primes
(2) all the members of X are even
Senior Manager
Joined: 25 Dec 2003
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Location: India
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Statement A and B alone cannot give a solution. Combining both will give only one solution. That is 2 is the only even prime number, and the deviation is 0.
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Joined: 04 Jul 2004
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Kudos [?]: 25 [0], given: 0

(C)
Separately 1 and 2 lead to infite series.
Combining we will get only one solution i.e. 2

SD of this series = 0
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