Difference between revisions of "2025 AMC 8 Problems/Problem 6"
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| − | The | + | Sekou writes the numbers <math>15, 16, 17, 18, 19.</math> After he erases one of his numbers, the sum of the remaining four numbers is a multiple of <math>4.</math> Which number did he erase? |
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| + | A)15 B)16 C)17 D)18 E)19 | ||
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| + | Solution 1 | ||
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| + | First, we sum the <math>5</math> numbers to get <math>85</math>. The number subtracted therefore must be 1 more than a multiple of 4. Thus, the answer is 17. | ||
| + | ~Gavin_Deng | ||
Revision as of 19:51, 29 January 2025
Sekou writes the numbers 
After he erases one of his numbers, the sum of the remaining four numbers is a multiple of 
Which number did he erase?
A)15 B)16 C)17 D)18 E)19
Solution 1
First, we sum the 
numbers to get 
. The number subtracted therefore must be 1 more than a multiple of 4. Thus, the answer is 17.
~Gavin_Deng
