IIT JEE , AIEEE Forum - Mathematics , Algebra

Discussion Response Post to: quest. on functions

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2 Feb 2008 15:18:49 IST

Subject: Re:quest. on functions

Blazing goIITian

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IF A AND B ARE TWO NON-EMPTY FINITE SETS CONTAINING m AND n ELEMENTS RESPECTIVELY......

THEN NO. OF ONTO FUNCTIONS FROM A TO B IS

_{[r=1 ]}

^{[n ]} (-1)^n-r ⁿc_r r^m , m>=n .

here in your question m=n ........

nudge me if i am wrong.....

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