The H.C.F. of 9/10, 12/25, 18/35 and 21/40 is · ABC26GN0472

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

The H.C.F. of $\frac{9}{10}, \frac{12}{25}, \frac{18}{35}$ and $\frac{21}{40}$ is

(a)$\frac{3}{5}$

(b)$\frac{252}{5}$

(c)$\frac{3}{1400}$

(d)$\frac{63}{700}$

Answer

Answer (as printed): C

Explanation

Required H.C.F. $=\frac{\text { H.C.F. of } 9,12,18,21}{\text { L.C.M. of } 10,25,35,40}=\frac{3}{1400}$.

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

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