Question

Largest 3 digit number exactly divisble by 8 and 10 and 12

Answer 1

LCM of 8, 10 and 12 = 120
Now, largest 3 digit number = 999
dividing 999 by 120
120)999( 8
       960
     -
        39( remainder)

so the largest 3 digit number which is exactly divisible by 8,10 and 12 will be 999- 39 = 960

Answer 2

first, take LCM of 8,10 and 12 and 3 digit number will be 999.Now divide 999 from LCM of 8,10 and 12.then subtract quotient from 999.the answer will be the required number.