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Q.

Find HCF of 25 and 55.


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a

5

b

3

c

2

d

4  

answer is A.

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Detailed Solution

Given numbers are 25 and 55.
We need to find the H.C.F of the given numbers.
Using the prime factorisation,
Prime factors of 25=5×5
Prime factors of 55=5×11
Since there are only one common factor i.e., 5, the HCF of the given numbers is 5.
Therefore, HCF25,55=5.
Hence, option 1 is correct.
 
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