What is the sum of all the numbers from 1 to 100 that are divisible by both 3 and 5?
Category: Math · Difficulty: hard
Hint: Identify the multiples of 15 within that range.
Answer
1050
Explanation
The multiples of 15 from 1 to 100 are 15, 30, 45, 60, 75, 90. Their sum is 1050.
This is a hard math riddle — a tricky one that takes a little thought. The answer is 1050.
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