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Q.

There are five odd numbers 1,3,5,7 and 9. What is the HCF of these odd numbers?


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a

2

b

1

c

6

d

3 

answer is B.

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Detailed Solution

Concept- Generally, a number's factors are any numbers that, when multiplied together, equal the original number. For example, the factors of 6 in this case are 2 ×3, and 6. Finding a common factor in which all of the numbers questioned in the given question are divisible is known as finding the highest common factor, or H.C.F.
 Let's calculate and determine which of these integers has the highest common factor.
Initially determining the factors of distinct numbers
Question ImageFor the five odd numbers, HCF is 1.
Hence, the answer is 1.
 
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