If A -1-2-3-4 and B -5-6-7-8- then which function is one-one and onto-A- f 2-1-6-2-8-3-8-4-5B- f 4-1-8-2-7-3-6-4-7C- f 3-1-5-2-7-3-8-4-5D- f 1-1-5-2-7-3-8-4-6

The correct option is D f1= (1, 5), (2, 7), (3, 8), (4, 6) ...

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Standard XII

Mathematics

Complement

If A =1,2,3,4...

Question

If A = {1, 2, 3, 4} and B = {5, 6, 7, 8}, then which function is one-one and onto?

f₂ = {(1, 6), (2, 8), (3, 8), (4, 5)}

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f₁= {(1, 5), (2, 7), (3, 8), (4, 6)}

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f₄ = {(1, 8), (2, 7), (3, 6), (4, 7)}

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f₃ = {(1, 5), (2, 7), (3, 8), (4, 5)}

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Solution

The correct option is B
f₁= {(1, 5), (2, 7), (3, 8), (4, 6)}

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If A = {1, 2, 3, 4} and B = {5, 6, 7, 8}, then which function is one-one and onto?

The correct option is B f1= {(1, 5), (2, 7), (3, 8), (4, 6)}

The correct option is B
f₁= {(1, 5), (2, 7), (3, 8), (4, 6)}