Question 114886
The divisors are 7,  8,  9
LCM = 7x8x9=56x9=504
So 504 will yield a remainder 0 for all cases
So to obtain Remainder 4 for operation with 7 deduct (7-4)=3 from 504
The Required number is =504-3=501
THe same way u deduct 3 for cases  8 and 9
Answer 501
Cheers