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Is it true that 8 and 15 are co-prime numbers?

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True

False

answer is A.

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Detailed Solution

It is given that 8 and 15 are co-prime numbers.
According to the rule,
Two numbers are coprime if their highest common factor (HCF) is

1

.
Therefore,
HCF of

8

and

15

by factoring these numbers:

8 =

1, 2, 4, 8

15 =

1, 3, 5, 15

So, HCF

(8, 15) = 1

8

and

15

are co-prime numbers.
Therefore,

8

and 15 are co-prime numbers is true.
Hence, the correct option is 1.

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