Question

Write all the numbers less than $100$ which are common multiples of $3$ and $4$.

Answer 1

Finding the common multiples :

MULTIPLES: A multiple of a number obtained by multiplying it by a natural number.

Multiples of $3$ upto $100$ are $3,6,9,\mathbf{12},15,18,21,\mathbf{24},27,30,33,\mathbf{36},39,42,45,\mathbf{48},51,54,57,\mathbf{60},63,66,69,\mathbf{72},75,78,81,\mathbf{84},87,90,93,\mathbf{96},99$

Multiples of $4$ upto $100$ are $4,8,\mathbf{12},16,20,\mathbf{24},28,32,\mathbf{36},40,44,\mathbf{48},52,56,\mathbf{60},64,68,\mathbf{72},76,80,\mathbf{84},88,92,\mathbf{96},100$

Therefore, the common multiples of $3$ and $4$ upto $100$ are $12,24,36,48,60,72,84,96$.