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Q.

Find the HCF of 25 and 30.


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a

 25

b

 6

c

 1

d

 5 

answer is D.

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Detailed Solution

Concept: Consider that HCF stands for "Highest Factor of All Common Factor in Given Number,"Thus, by writing down the prime factors of the supplied numbers, we can factorise the given numbers and then discover the largest common factor.
Finding the factors of the given numbers 25 and 30
Factor of 30
Question ImageQuestion ImageFactor of 30,
Question ImageHCF=5
Hence, the correct option is 4.
 
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Find the HCF of 25 and 30.