3. Find first three common multiples of :
(a) 6 and 8 (b) 12 and 18
(a) 6 and 8
Multiple of 6=6,12,18,24,30…
Multiple of 8=8,16,24,32……
common multiples =24,48,72
(b) 12 and 18
Multiples of 12=12,24,36,78
Multiples of 18=18,36,54,72 3
common multiples = 36,72,108