The number of permutation of n different objects, taken r at a line, when repetitions are allowed, is …….. .

The number of permutations of n different objects, taken r at a line, when repetitions are allowed, is ……

The number of permulations of n different objects taken K at a time , when repetitions are allowed is

Assertion: The number of different number plates which can be made if the number plte contain three letters of the English alphabet followied by athree digit number is (26)^3xx(900) (if represents are allowed) Reason: The number of permutationis of n different things taken r at time when repetitios are allowed is n^r . (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

Assertion: The number of different number plates which can be made if the number plte contain three letters of the English alphabet followied by athree digit number is (26)^3xx(900) (if represents are allowed) Reason: The number of permutationis of n different things taken r at time when repetitios are allowed is n^r . (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not te correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

The number of circular permutations of n different objects is

Find the number of permutations of 7 objects, taken 3 at a time.

Find the number of permutations of 10 objects, taken 4 at a time.

The number of permutations of 'n' different objects taken r at a time, when a particular element always occur in each arrangement, is

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