CBSE BOARD XII, asked by Roshiriya, 1 year ago

pls tell the answer by photo

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Answered by nisarganis
0
i hope this can be the answer
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Roshiriya: ya i use
nisarganis: den u can get the same answer know
Roshiriya: can u pls explain 2 nd step
nisarganis: by using permutation formula
Roshiriya: how
nisarganis: 6p4 takes the general form npr which has a formula npr=n!÷(n-r)!
nisarganis: so it got transformed into 6!÷(6-4)!
Roshiriya: oh tq
Roshiriya: siss
nisarganis: its ok
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