Math, asked by jivok, 9 days ago

14. A has 2 elements, B has 4 elements and A​

Answers

Answered by satyambardawaj
2

There are 24 ways of mapping an injective function from A to B. The answer is option-C. 4P3=4!

Answered by βαbγGυrl
3

Answer:

Correct option is A)

Given, n(A)=4,n(B)=2

∴n(A×B)=8

Thus the number of subsets of A×B having at least 3 elements

=2^(8-8) C_0^(-8)C_2 = 256−1−8−28=219

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