Question

Ravi has some marbles.when he places them at rows of 12,15,18,no marbles remains.what is the least possible number of marbles he has?

Answer 1

Find the l.c.m of 12,15,18
12=2*2*3
15=3*5
18=2*3*3
L.c.m=2^2*3^2*5
=180