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Question
Identify the co-prime numbers from the following?
Identify the co-prime numbers from the following?
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Solution
The correct options are
A 0
B 1
C 2
In number theory, two integers 'a' and 'b' are said to be relatively prime, mutually prime, or coprime if the only positive integer (factor) that divides both of them is 1. All co-prime numbers have only 1 as their HCF.
(i) In 3 and 7
3 = 3 x 1
7 = 7 x 1
HCF = 1
(ii) In 12 and 13
12 = 2 x 2 x 3
13 = 13 x 1
HCF = 1
(iii) In 7 and 10
7 = 7 x 1
10 = 2 x 5 x 1
HCF = 1
A
0
B
1
C
2
In number theory, two integers 'a' and 'b' are said to be relatively prime, mutually prime, or coprime if the only positive integer (factor) that divides both of them is 1. All co-prime numbers have only 1 as their HCF.
(i) In 3 and 7
3 = 3 x 1
7 = 7 x 1
HCF = 1
(ii) In 12 and 13
12 = 2 x 2 x 3
13 = 13 x 1
HCF = 1
(iii) In 7 and 10
7 = 7 x 1
10 = 2 x 5 x 1
HCF = 1
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