Question

Find the smallest number which when decreased by $10$ is exactly divisible by $16,21,24$ and $42$?

• A. $546$
• B. $446$
• C. $346$
• D. $246$

Answer 1

Answer: (C)

$346$

Required no $=(\text{LCM of}16,21,24,42)+10$
$=(2\times 2\times 2\times 3\times 7\times 2)+10$
$=336+10$
$=346$