Question

Which of the following are coprime number number is 161 and 192

Answer 1

Answer: they are co prime  as their HCF is 1

Step-by-step explanation:

using euclids division lemma :

192=161*1+31

161=31*5+6

31=6*5+1

6=1*6+0

thus 1 is the HCF as they are co prime

or

using prime factorization method :

192= 2^6 * 3 * 1

161= 7 * 23 * 1

since there is no  comman factor other than 1 , 1 is the HCF thus (192,161) are co prime

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