Statements-I:: The no. of permutations o...

Statements-I:: The no. of permutations of n different things taken any no. of things at a time is `nP_n`, (repetition not allowed) Statements-II : The no. of permutations of n different things taken any no. of things at a time is `nP_1+nP_2 +nP_3+ +nP_n` (repetition not allowed)

Similar Questions

Explore conceptually related problems

The no.of all permutation of n distinct things taken all at a time is n!

The number of permutations of n different things taken r at a time in which 4 particular things never occur is -

Find the number of permutations of n different things taken r at a time such that 3 specific things occur together ?

Show that the total number of permutations of n diferent things not more than r things at a time (repetition being allowed) is (n(n^(r)-1))/(n-1) .

The number of permutations of 25 dissimilar things taken more than 15 at a time when repetitions are allowed is (not exceeding 25)

(i) If the number of permutations of n different thing taken r at a time be denoted by (nPr) Show that,

Find the number of permutations of n different things taken r at time so that m(ltr) particular things will always occur

Find the number of permutations of n different things taken r at a time such that two specific things occur together?