What is the three-digit number where the sum of its digits equals 15 and the hundreds digit is 7?
Category: Math · Difficulty: medium
Hint: Focus on the hundreds place and how to reach the total.
Answer
780
Explanation
If the hundreds digit is 7, then the other two digits must sum to 8 (15 - 7 = 8). The combination 8 and 0 works.
This is a medium math riddle — a moderate challenge for most people. The answer is 780.
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