In a hotel, the room numbers are consecutive integers. If the sum of the first three rooms is 123, what is the number of the middle room?
Category: Math · Difficulty: hard
Hint: Use the properties of consecutive integers.
Answer
41
Explanation
Let the rooms be x, x+1, x+2. Therefore, x + (x+1) + (x+2) = 123, solving gives x = 40.
This is a hard math riddle — a tricky one that takes a little thought. The answer is 41.
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