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Test: Factors and Multiples- 2


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10 Questions MCQ Test Mathematics for Class 5 | Test: Factors and Multiples- 2

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Test: Factors and Multiples- 2 - Question 1

What are the common factors of 9 and 36?

Detailed Solution for Test: Factors and Multiples- 2 - Question 1

Factors of 9 = 1, 3, 9
Factors of 36 = 1, 3, 4, 6, 9, 12, 36
Common factors are 1, 3, 9.

Test: Factors and Multiples- 2 - Question 2

Find three common multiples of 18 and 6.

Detailed Solution for Test: Factors and Multiples- 2 - Question 2

Multiples of 18 = 18, 36, 54...
Multiples of 6 = 6, 12, 18,...
The first common multiple will be 18 And the next common multiples will be multiples of 18
Hence, first three common multiples of 18, 6 are 18, 36, 54.

Test: Factors and Multiples- 2 - Question 3

How many prime numbers are there from 50 to 100?

Detailed Solution for Test: Factors and Multiples- 2 - Question 3

The prime numbers between 50 and 100 are 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97, which are 10 in number.

Test: Factors and Multiples- 2 - Question 4

How is 20 written as the product of primes?

Detailed Solution for Test: Factors and Multiples- 2 - Question 4

20 expressed as a product of primes is 2 × 2 × 5.

Test: Factors and Multiples- 2 - Question 5

Identify the correct statement.

Detailed Solution for Test: Factors and Multiples- 2 - Question 5

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

Test: Factors and Multiples- 2 - Question 6

How many times the H.C.F. of 11, 33 and 88 is their L.C.M?

Detailed Solution for Test: Factors and Multiples- 2 - Question 6

H.C.F. of 11, 33 and 88 is 11.
L.C.M. of 11,33 and 88 is 11 × 3 × 8 = 11 × 24 = H.C.F .× 24.

Test: Factors and Multiples- 2 - Question 7

Identify an example for co-prime numbers.

Detailed Solution for Test: Factors and Multiples- 2 - Question 7

Co-prime numbers are numbers that have no common factor other than 1.

Test: Factors and Multiples- 2 - Question 8

The L.C.M. of two numbers is 10 times their H.C.F. Find the numbers.

Detailed Solution for Test: Factors and Multiples- 2 - Question 8

Let the numbers be 24 and 240.
Then their H.C.F. = 24 and L.C.M. = 240.
Hence the required numbers are 24 and 240.

Test: Factors and Multiples- 2 - Question 9

What is the sum of the first five multiples of 8?

Detailed Solution for Test: Factors and Multiples- 2 - Question 9

The sum of the first five multiples of 8 is 8 + 16 + 24 + 32 + 40 = 120.

Test: Factors and Multiples- 2 - Question 10

Find the least 4−digit number that is divisible by 8.

Detailed Solution for Test: Factors and Multiples- 2 - Question 10

The least 4-digit number is1000, which is exactly divisible by 8 as 8 × 125 = 1000.

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