Question

Find the least number which when increased by 4 is divisible by each of the numbers 10,15,20,25.

Answer 1

lcm of 10=2*5
            15=2*3
             20=2*2*5
             25=5*5
so lcm of 10,15,20,25=2*2*5*5*3
                                   =300
now the no. is increased by 4
let the no. be x
so x+4=300
    so x=296
so the least no.is 296

Answer 2

THE  LEAST NUMBER WHICH WHEN INCREASED BY 4 IS DIVISIBLE BY 10,15,20,25 IS 296