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satish narayan chaudhary

· started a discussion

· 1 Months ago

doubt (Question: 189740.0 )

why not (6, 2) form a pair

Question:
The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is – 
Options:
A) 1
B) 2
C) 3
D) 4
Solution:
Ans: (b)


Knowledge Expert

· commented

· 1 Months ago

Factors of:
6 = 1, 2, 3.
2 = 1, 2.

They have highest common factor 2. co-prime are those pair that have 1 as hcf.

So only (1,12) and (4,3) are such pairs.
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