Question

Find the L.C.M. and H.C.F of the following numbers.

$3.6,1.08$ and $0.324$.

• A. L.C.M. $=16.8$ and H.C.F. $=0.042$
• B. L.C.M. $=32.4$ and H.C.F. $=0.036$
• C. L.C.M. $=14.4$ and H.C.F. $=0.096$
• D. L.C.M. $=13.5$ and H.C.F. $=0.072$

Answer 1

The correct option is B L.C.M. $=32.4$ and H.C.F. $=0.036$

For finding HCF and LCM of decimals we should remove the decimal point and find the highest common factor and least common multiple as usual.

So removing decimals we get numbers

$3.6x1000=3600,1.08x1000=1080,0.324x1000=324$

HCF of $3600,1080,324is36$

LCM of $3600,1080,324is32400$

Since we multiplied every number by 1000 to remove decimals so we should devide HCF and LCM by 1000 So our required $HCF=0.036$ and required $LCM=32.4$

So the correct answer will be Option B