1
Q
nPr =
A
n!/(n-r)!
2
Q
nCr=
A
n!/(n-r)!r!
3
Q
what is n^r
A
no of permutations of n things taken r at a time, rep is allowed
Maths Class 11
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Decks in class (13)
# Cards
nPr =
n!/(n-r)!
nCr=
n!/(n-r)!r!
what is n^r
no of permutations of n things taken r at a time, rep is allowed
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