Question

Find the first five common multiples of :

$13$ and $39$

Answer 1

Given , the number is $13$ and $39$

The multiples of $13$ are $=13,26,\mathbf{}\mathbf{39},52,65,\mathbf{}\mathbf{78},91,104,\mathbf{}\mathbf{117}\mathbf{},130,143,156,169,182,\mathbf{195},208,221,\mathbf{}\mathbf{234},247$

The multiples of $39$ are $=\mathbf{}\mathbf{39},\mathbf{}\mathbf{78},\mathbf{117},156,\mathbf{195},\mathbf{234},273,312,351,390,429,468,507$

Hence, the first five required common multiples are $39,78,117,195,234$ .