Find the L.C.M.
The L.C.M.of $0.147, 1.4$ and $0.42$ is $m$ then value of $10 m$ is

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Solution

Convert each of the decimals to like decimals as $147, 1400, 420$
Now find the highest common factor and the least common multiple as usual.
H.C.F of $147, 1400, 420$ is 7 and L.C.M $147, 1400, 420$ is 29400.
Now, in the answer(highest common factor/ least common multiple), put the decimal point as there are a number of decimal places in the like decimals.
$∴$ H.C.F of $0.147$ , $1.4$ and $0.42$ is $0.007$ and L.C.M of $0.147$ , $1.4$ and $0.42$ is $29.4$ .
Thus $10 m = 294$

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