Posted by martabak on .
the smallest integer which is an exact multiple of both 60 and 126

maths 
MathMate,
60=2^2*3*5
126=2*3^2*7
The LCM is therefore
LCM=2^2*3^2*5*7
=1260
Alternatively you find it by division:
2  60, 126
3  30, 63
1  10, 21
LCM = 2*3*1*10*21 = 1260