Subject :IMO Class : Class 6
Find the least number which on adding 9 to it becomes exactly divisible by 15, 25, 30 and 45.
A410
B450
C380
D441
Ans 1: (Master Answer)
Class : Class 1
(D): L.C.M. of 15, 25, 30 and 45 = 450
450 – 9 = 441.
So, if 9 is added to 441, the number is divisible by all the 4 numbers.