A constant function f-A- B will be onto if

The correct option is B n (B) = 1 Given the f:A→ B is onto amp; is constant.Co domain=Range and so it should contain only one element. ∴ n(B) ...

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Many-One onto Function

A constant fu...

Question

A constant function $f : A \to B$ will be onto if

n (A) = n (B)

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n (A) = 1

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n (B) = 1

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n (A) > n (B)

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A \subset Z

f : A \to B

f (x) = \sqrt{\frac{| x | - 1}{| x | + 1}} - \sqrt{\frac{2 + | x |}{2 - | x |}} .

n (A \cup B)

f : A \to B

n (A) = 10

n (B)

n (A) = 40, n (B) = 27

n (A

\cap

B) = 15

n (B - A)

A

B

n (A) = 20

n (A \cap B) = 4

n (A \cup B) = 42

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