# Mathematics-Factors and Multiples (NSTSE (National Science Talent Search Exam- Unified Council) Class 5): Questions 1 - 8 of 86

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## Question number: 1

» Mathematics » Factors and Multiples

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MCQ▾

### Question

The L. C. M. of two numbers is 10 times their H. C. F. Find the numbers. (Model Test Paper)

### Choices

Choice (4) Response

a.

16,15

b.

24,240

c.

d.

24,480

## Question number: 2

» Mathematics » Factors and Multiples

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MCQ▾

### Question

How is 30 written as the product of primes?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Mathematics » Factors and Multiples

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MCQ▾

### Question

How many hundreds are there in the sum of the factors of 200?

### Choices

Choice (4) Response

a.

4

b.

40

c.

400

d.

536

## Question number: 4

» Mathematics » Factors and Multiples

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MCQ▾

### Question

Find the smallest whole number that is divisible by 15 and 20.

### Choices

Choice (4) Response

a.

45

b.

40

c.

30

d.

60

## Question number: 5

» Mathematics » Factors and Multiples

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MCQ▾

### Question

Identify the correct statement.

### Choices

Choice (4) Response

a.

The H C F of twin primes is their product.

b.

The largest factor of a number is 1.

c.

The L C M of two co-primes is their product.

d.

The smallest factor of a number is the number itself.

## Question number: 6

» Mathematics » Factors and Multiples

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MCQ▾

### Question

is a list of prime number in descending order. What is the value of ?

### Choices

Choice (4) Response

a.

16

b.

21

c.

67

d.

73

## Question number: 7

» Mathematics » Factors and Multiples

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MCQ▾

### Question

How many twin primes are there between 30 and 50?

### Choices

Choice (4) Response

a.

9

b.

8

c.

10

d.

5

## Question number: 8

» Mathematics » Factors and Multiples

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MCQ▾

### Question

Find the L. C. M. of

### Choices

Choice (4) Response

a.

24

b.

72

c.

36

d.

108

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