The greatest number of four digit which is divisible by 15, 25, 40 and 75 is :

Consider a 6-digit number of the form XYXYXY. The number is divisible by :

Find the smallest perfect square number which is exactly divisible by 4, 5, 6, 15 and 18 :

Find the sum of all three-digit numbers divisible by 9.

The number 97^30 - 14^30 is divisible by:

The least number more than 5000 which is exactly divisible by 67 is