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Cool goIITian

Joined:	15 Jul 2008
Post:	37

9 Dec 2008 20:18:39 IST

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what is the probability that a 6 digit no. formed by 2,3,4,5,7,8 (using all at a time) is

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what is the probability that a 6 digit no. formed by 2,3,4,5,7,8 (using all at a time) is divisible by 11.

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Sagar Saxena

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Joined: 8 Oct 2008

Posts: 7221

16 Dec 2008 12:59:23 IST

Like 3 people liked this

hello dear..

for divisibilty of 11

(sum of odd digits) - (sum of even digits ) = divisible by 11

fact(3) * fact(3) / fact (6)

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