Find the greatest number of four digits which when divided by 10, 11, 15, and 22 leaves 3, 4, 8 and 15 as remainders respectively.
9893
First find the greatest 4 digit multiple of the LCM of 10, 11, 15 and 22. In this case, it is 9900. Now subtract 7 from 9900 to obtain the answer.