Home
Class 11
MATHS
Let n(A) = 4 and n(B) = k. The number of...

Let n(A) = 4 and n(B) = k. The number of all possible injections from A to B is 120 then k =

A

9

B

24

C

5

D

6

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

Let n(A) = 4 and n(B) = 5. The number of all possible many-one functions from A to B is

Let n(A)=4 and n(B)=5 . The number of all possible many-one functions from A to B is

If A, B are two sets such that n(A) = 100, n(B) = 150, then the number of bijections from A onto B is

If A, B are two sets such that n(A) = 15, n(B) = 20, then the number of injections from A into B is

If A , B are two sets such that n(A)=100, n(B)=150 , then the number of bijections from A onto B is

A = {1, 2, 3, 4), B = {a, b, c, d, e}, then the number of all possible constant functions from A to B is

Let A = {1, 2, 3,--------n} and B = {a, b, c], the number of functions from A to B that are onto is

Two finite sets A and B have n and 2 elements respectively. For n ge 2 , if the number of surjections from A to B are 62, then n =

Let T_(n) be the number of all possible triangles formed by joining vertices of an n - sided regular polygon . IF T_(n+1)-T _n=10 then the value of n is -