Punjab State Board PSEB 5th Class Maths Book Solutions Chapter 3 HCF and LCM MCQ Questions and Answers.

## PSEB 5th Class Maths Chapter 3 HCF and LCM MCQ Questions

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Question 1.

Which number is the smallest even Prime number ? ………

(a) 0

(b) 1

(c) 2

(d) 4

Answer:

(c) 2

Question 2.

Which number is neither Prime nor Composite ?

(a) 1

(b) 2

(c) 3

(d) 4

Answer:

(a) 1

Question 3.

Which numbers are Prime numbers between 70 and 80 ?

(a) 71, 72, 73

(b) 71, 75, 79

(c) 71, 80

(d) 71, 73, 79.

Answer:

(d) 71, 73, 79.

Question 4.

HCF of 75 and 90 = ……

(a) 5

(b) 10

(c) 15

(d) 20.

Answer:

(c) 15

Question 5.

LCM of 12, 18 and 24 = …….

(a) 72

(b) 36

(c) 48

(d) 24

Answer:

(a) 72

Question 6.

If HCF of any two numbers is 8 then out of following which can not be LCM of that numbers ?

(a) 48

(b) 60

(c) 24

(d) 56

Answer:

(b) 60

Question 7.

What is length of the largest tape which can measure the lengths of 24 m and 30 m ?

(a) 4 m

(b) 5 m

(c) 6 m

(d) 7 m.

Answer:

(c) 6 m

Question 8.

What is the smallest number which is divisible by 8 and 12 ?

(a) 16

(b) 48

(c) 72

(d) 24

Answer:

(d) 24

Question 9.

LCM of 26 and 39 = ……

(a) 13

(b) 78

(c) 39

(d) 26

Answer:

Question 10.

(a) 5

(b) 65

(c) 12

(d) 13.

Answer:

(d) 13.

Question 11.

Which number is composite number in the following?

(a) 43

(b) 23

(c) 21

(d) 37.

Answer:

(c) 21

Question 12.

Out of following, which number is multiple of 19?

(a) 171

(b) 172

(c) 173

(d) 174.

Answer:

(a) 171

Question 13.

HCF of 15, 45 and 105 = ………

(a) 15

(b) 5

(c) 30

(d) 45.

Answer:

(a) 15

Question 14.

What is the HCF of two prime numbers ?

(a) 1

(b) 2

(c) 3

(d) 4

Answer:

(a) 1

Question 15.

Three bells ring with the time gap of 10 min, 15 min and 20 min respectively in a school. If all bells are rung together at 9:00 am then after how long the bells would ring together again ?

(a) 11:00 o’clock

(b) 08:00 o’clock

(c) 10:00 o’clock

(d) 12:00 o’clock

Answer:

(c) 10:00 o’clock

Read this pattern carefully and answer questions (16 – 20)

Question 16.

Read the above pattern and find the sum of first 6 Odd numbers.

(a) 30

(b) 12

(c) 25

(d) 36.

Answer:

(d) 36.

Question 17.

Read the above pattern and find the sum of first 10 Odd numbers.

(a) 20

(b) 50

(c) 100

(d) 40.

Answer:

(c) 100

Question 18.

Read the above pattern and find the sum of first 8 Even numbers.

(a) 16

(b) 24

(c) 72

(d) 64.

Answer:

(c) 72

Question 19.

Read the above pattern and find sum of first 9 even numbers.

(a) 19

(b) 18

(c) 45

(d) 90.

Answer:

(d) 90.

Question 20.

On a given road, the poles are erected at a distance of 24 m each and piles of stones are lying at a distance of 30 m each. If the 1st pile of stones is lying adjacent to the first pole, at what distance will the pole and the pile of stones be together again ?

(a) 100 m

(b) 110 m

(c) 150 m

(d) 120 m.

Answer:

(d) 120 m.

Question 21.

What is the length of the largest inchitape which can measure the lengths of 24 m and 30 m completely:

(a) 4 m

(b) 5 m

(c) 6 m

(d) 7 m.

Answer:

(c) 6 m

Question.

Write the smallest number which is divisible by 8 and 12.

Solution:

The smallest number which is divisible by 8 and 12 = LCM of 8 and 12.

= 2 × 2 × 2 × 3 = 24