Problem 1 · 2025 Math Kangaroo
Easy
Number Theory
place-value
Lisa can make the number 2025 out of four wooden digits. Which of these is the largest number she can make using those same four digits?
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Answer: C — 5220
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Hint 1 of 2
You have the four digits 2, 0, 2, 5 — think about where the biggest digit should go.
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Hint 2 of 2
To make the largest number, put the digits in decreasing order from left to right.
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Approach: order the digits from largest to smallest
- The available digits are 2, 0, 2, 5.
- A number is largest when its biggest digits sit in the highest place values.
- Sorted from greatest to least: 5, 2, 2, 0, giving 5220, which is (C).
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