What is the largest four-digit number that is divisible by 3, 4, and 5 without any remainder?
Explanation
The highest four-digit number is 9999. The least common multiple (LCM) of 3, 4, and 5 is 60. When 9999 is divided by 60, the remainder is 39. Subtracting this remainder from 9999 gives 9999 - 39 = 9960, which is the greatest number divisible by all three.