Which of the following is a pair of co-primes? · ABC26GN0463

Subject: General Aptitude · Chapter: H.C.F. and L.C.M. of Numbers

Which of the following is a pair of co-primes?

(a)$(16,62)$

(b)$(18,25)$

(c)$(21,35)$

(d)$(23,92)$

Answer

Answer (as printed): B

Explanation

H.C.F. of 18 and 25 is 1. So, they are co-primes.

Explanation as extracted from the printed page; notation may be imperfect.

Study loop for H.C.F. and L.C.M. of Numbers