Question

find the smallest number which when divided by 25,40,60 leaves remainder 7 in each case

Answer 1

607

Take LCM of 25,40,60: which  is 600
now add remainder=7 
so it is 607

Answer 2

25-7,40-7,60-7
18,33,53
Let find lcm of these no.
18=2*3*3
33=11*3
53=53*1
Lcm=2*3*3*11*53=find it on ur own....As u have got the answer