# Mathematics (NSTSE (National Science Talent Search Exam- Unified Council) Class 10): Questions 16 - 23 of 973

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## Question number: 16

» Mathematics » Trigonometry

MCQ▾

### Question

The top of a broken tree has its top end touching the ground at a distance 15m from the bottom, the angle made by broken end with the ground is. Then length of broken part

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 17

» Mathematics » Trigonometry

MCQ▾

If and then

### Choices

Choice (4) Response

a.

1

b.

c.

d.

## Question number: 18

» Mathematics » Trigonometry

MCQ▾

If then

### Choices

Choice (4) Response

a.

b.

0

c.

d.

Question does not provide sufficient data or is vague

## Question number: 19

» Mathematics » Trigonometry

MCQ▾

In

### Choices

Choice (4) Response

a.

1

b.

c.

d.

## 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