Sets, Relations and Functions-Functions Mapping and Types (BITSAT Mathematics): Questions 1 - 4 of 4

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Question number: 1

» Sets, Relations and Functions » Functions Mapping and Types

MCQ▾

Question

If f:RR be a mapping defined by f(x)=x3+5 , then f1(x) is equal to –

Choices

Choice (4) Response

a.

5x

b.

(x5)13

c.

(5x)13

d.

(x+5)13

Question number: 2

» Sets, Relations and Functions » Functions Mapping and Types

MCQ▾

Question

If A=(1, 2,3, 4) , then which of the following are function from A to itself?

Choices

Choice (4) Response

a.

f1={(x,y) y=x+1}

b.

f4={(x,y) x+y=5}

c.

f3={(x,y) y<x}

d.

f2={(x,y) x+y>4}

Question number: 3

» Sets, Relations and Functions » Functions Mapping and Types

MCQ▾

Question

The number of surjections from A={1, 2,n) , n2 onto B=(a,b) is –

Choices

Choice (4) Response

a.

2n1

b.

nP2

c.

2n+1

d.

None of the above

Question number: 4

» Sets, Relations and Functions » Functions Mapping and Types

MCQ▾

Question

Let A{1, 2,3} and B{1, 2,4} , then F={(1, 1),(1, 2),(2, 1),(3, 4)} is a –

Choices

Choice (4) Response

a.

Surjection from A to B

b.

Bijection from A to B

c.

One-one function from A to B

d.

None of the above

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