a pair of co prime numbers from the following are a)7 and 56 b)37 and 147 c)5 and 65 d)63 and 81
Answers
Answer:
b)37 and 147 is the co prime
Step-by-step explanation:
a) factors of 7 =1,7
factors of 56 =1,2,4,7,8,14,28,56
common factors=1,7
there are 2 common factors
Since both have more than one common factor, therefore, they are not co-prime numbers
b) factors of 37 = 1,37
factors of 147 = 1,3,7,21,49,147
common factors =1
Since both have only one common factor, i.e., 1, therefore, they are co-prime numbers.
c) factors of 5 =1,5
factors of 65 =1,5,13,65
common factors =1,5
Since both have more than one common factor, therefore, they are not co-prime numbers
d)factors of 63 = 1, 3,21,63
factors of 81 = 1, 3, 9, 27, 81
common factors...1 and 3
Since both have more than one common factor, therefore, they are not co-prime numbers
therefore b)37 and 147 is the only co prime....in the above following terms