# Mathematics (NSTSE Class 10): Questions 20 - 27 of 973

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## Question number: 20

» Mathematics » Trigonometry

MCQ▾

The value of

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 21

» Mathematics » Real Numbers

MCQ▾

### Question

The sum of additive inverse and multiplicative inverse of 3 is

### Choices

Choice (4) Response

a.

- 3

b.

2

c.

0

d.

- 1

## Question number: 22

» Mathematics » Real Numbers

MCQ▾

### Question

If be the rational numbers such the andthen________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 23

» Mathematics » Real Numbers

MCQ▾

### Question

The sum of 2 rational and irrational number is always

### Choices

Choice (4) Response

a.

Irrational

b.

Rational

c.

All of the above

d.

Question does not provide sufficient data or is vague

## Question number: 24

» Mathematics » Real Numbers

MCQ▾

### Question

Set of natural numbers is a subset of

### Choices

Choice (4) Response

a.

Set of composite numbers

b.

Set of real numbers

c.

Set of even numbers

d.

Set of odd numbers

## Question number: 25

» Mathematics » Real Numbers

MCQ▾

### Question

Which of the following is not a rational number?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 26

» Mathematics » Real Numbers

MCQ▾

The value of is

### Choices

Choice (4) Response

a.

2.23

b.

1.72

c.

2.59

d.

1.41

## Question number: 27

» Mathematics » Real Numbers

MCQ▾

### Question

If X: Every fraction is a rational number and,

Y: Every rational number is a fraction,

Then which is the correct option?

### Choices

Choice (4) Response

a.

X is false and Y is true

b.

X is true and Y is false

c.

X and Y false

d.

X and Y true

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