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Worksheet 2 – Factors and Multiples Class 5th
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Question 1 of 10
1. Question
L.C.M. of two numbers is
Correct
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OOPS! Incorrect Answer
Correct Answer: 
Question 2 of 10
2. Question
Assertion(A) : 16 and 25 are coprime numbers
Reason (R) : Two numbers are coprime if they have no common factors other than 1Correct
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Correct Answer: Both A and R are correct and R is the correct Explanation of A 
Question 3 of 10
3. Question
Assertion(A): 2 is a factor and a multiple of itself.
Reason(R): Every number is a factor and a multiple of itself.Correct
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Correct Answer: Both A and R are correct and R is the correct Explanation of A 
Question 4 of 10
4. Question
Which of the following numbers is a factor of every number?
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Correct Answer : 1 
Question 5 of 10
5. Question
L.C.M. of 20 , 24 , 28 is
Correct
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Explanation:

Question 6 of 10
6. Question
H.C.F. of 14 , 16 , 18 is
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Explanation:

Question 7 of 10
7. Question
Number of prime numbers from 1 to 60 are
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Explanation:
Prime numbers from 1 to 60 are
2 , 3, 5 ,7 , 11 , 13 , 17 , 19 , 23 , 29 , 31 , 37 , 41 , 43 , 47 , 53 , 59
Thus, number of prime numbers from 1 to 60 are 17 
Question 8 of 10
8. Question
30 can be expressed as the product of the primes as :
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Correct Answer : 2 X 3 X 5 
Question 9 of 10
9. Question
Four common multiples of 14 and 8 are
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OOPS! Incorrect Answer
L.C.M. = 2 X 2 X 2 X 7 = 56
56 X 2 = 112
56 X 3 = 168
56 X 4 = 224 
Question 10 of 10
10. Question
Which of the following pairs of numbers are coprimes ?
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Explanation: Coprime numbers are the numbers which do not have anything in common except 1.
Note : The numbers themselves may or may not be prime.The only condition is that they do not have anything in common except 1.