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10.12.2019 •
Mathematics
There are fifteen children in the gym class who haven't yet been picked to be team leaders. if you need to select four, in how many ways can they be selected?
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Ответ:
First witch took pumpkins.
The number of pumpkins remained
Second witch took
The number of pumpkins remained
Third witch took
Ghost took 3 pumpkins. The number of pumpkins remained is 3,6 or 9.
Solve equation for each case.
1)
2)
3)
Only equation 2) has a solution which is a whole number: 25
The total number of pumpkins is 25.