Find the highest common factor of 36 and 84. · ABC26GN0460

Subject: General Aptitude · Chapter: H.C.F. and L.C.M. of Numbers · Exam: R.R.B. 2003

Find the highest common factor of 36 and 84.

(a)4

(b)6

(c)12

(d)18

Answer

Answer (as printed): C

Explanation

$36=2^{2} \times 3^{2} ; 84=2^{2} \times 3 \times 7$. $$\therefore \quad \text { H.C.F. }=2^{2} \times 3=12 .$$

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

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