Question

the number of function that can be defined form the set A=a b c d into set b= 123 is equal to

Answer 1

Answer:

Correct option is

D

81

Given, A={a,b,c,d} and B={1,2,3}

Element a can be have an image in 3 ways, i.e., (1,2, or 3).

Similarly b,c and d can have an image in 3 ways.

Thus total number of ways =3×3×3×3×=81.

Step-by-step explanation:

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