I am a four-digit number. The sum of my digits is 18, and if you reverse my digits, you get a number that is 297 less than me. What am I?
Category: Math · Difficulty: hard
Hint: Think about the properties of reverse numbers.
Answer
9810
Explanation
Let the number be represented as abcd. The equation can be set as 1000a + 100b + 10c + d - (1000d + 100c + 10b + a) = 297, giving the solution of 9810.
This is a hard math riddle — a tricky one that takes a little thought. The answer is 9810.
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