Difference between revisions of "2020 CIME I Problems/Problem 3"
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==Solution== | ==Solution== | ||
| + | We see that the integers from 1 - 11 cannot be achieved. We similarly see that the integers from 16-23 cannot be reached. We then see that the integers from 31-35 cannot be reached. We then see that 46 and 47 cannot be reached. We then attempt to show that 61 can be reached. We see that 12x4 and 13 get the trick done. The answer is then 480. | ||
{{solution}} | {{solution}} | ||
Revision as of 15:40, 31 August 2020
Problem 3
In a math competition, all teams must consist of between 
and 
members, inclusive. Mr. Beluhov has 
students and he realizes that he cannot form teams so that each of his students is on exactly one team. Find the sum of all possible values of 
.
Solution
We see that the integers from 1 - 11 cannot be achieved. We similarly see that the integers from 16-23 cannot be reached. We then see that the integers from 31-35 cannot be reached. We then see that 46 and 47 cannot be reached. We then attempt to show that 61 can be reached. We see that 12x4 and 13 get the trick done. The answer is then 480. This problem needs a solution. If you have a solution for it, please help us out by adding it.
| 2020 CIME I (Problems • Answer Key • Resources) | ||
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Followed by Problem 4 | |
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