Mathematics-Factors and Multiples (NSTSE Class 5): Questions 1 - 8 of 84

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Question number: 1

» Mathematics » Factors and Multiples

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.

24,96

b.

16, 15

c.

24, 480

d.

24, 240

Question number: 2

» Mathematics » Factors and Multiples

MCQ▾

Question

How is 30 written as the product of primes?

Choices

Choice (4) Response
a.

2×3×5

b.

2×7

c.

2×2×5×7

d.

2×5×7

Question number: 3

» Mathematics » Factors and Multiples

MCQ▾

Question

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

Choices

Choice (4) Response
a.

4

b.

536

c.

400

d.

40

Question number: 4

» Mathematics » Factors and Multiples

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

MCQ▾

Question

Identify the correct statement.

Choices

Choice (4) Response
a.

The smallest factor of a number is the number itself.

b.

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

c.

The largest factor of a number is 1.

d.

The H C F of twin primes is their product.

Question number: 6

» Mathematics » Factors and Multiples

MCQ▾

Question

97,89,p,79,73,71,q,61 is a list of prime number in descending order. What is the value of pq ?

Choices

Choice (4) Response
a.

21

b.

67

c.

73

d.

16

Question number: 7

» Mathematics » Factors and Multiples

MCQ▾

Question

How many twin primes are there between 30 and 50?

Choices

Choice (4) Response
a.

9

b.

10

c.

5

d.

8

Question number: 8

» Mathematics » Factors and Multiples

MCQ▾

Question

Find the L. C. M. of 12,24and36.

Choices

Choice (4) Response
a.

24

b.

72

c.

108

d.

36

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