Question

Find first four common multiples of $1,2$ and $3$.

• A. $2,4,8,10$
• B. $3,6,12,30$
• C. $6,12,18,24$
• D. $1,2,3,4$

Answer 1

The correct option is C $6,12,18,24$

Multiples of 1 are 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24

Multiples of 2 are 2,4,6,8,10,12,14,16,18,20,22,24

Multiples of 3 are 3,6,9,12,15,18,21,24,27,30

$\therefore$ First four common multiples $=6,12,18,24$