A mapping from the set to the set is specified by f(1)=1, ; f(2)=2, ; f(3)=1, ; f(4)=p

MATHEMATICS · Single correct · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

A mapping

f

from the set

A=\{1,2,3,4\}

to the set

B=\{1,2\}

is specified by

f(1)=1,\; f(2)=2,\; f(3)=1,\; f(4)=p.

For which value of

p\in B

will

f

be onto

B

? (a) Either

1

or

2

(b)

1

(c)

2

(d)

3

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