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Mary and Jenna are playing a game in which each girl rolls a twenty-sided die with numbers from 1 to 20 on the faces. If the number on the die that Mary rolls is a factor of the number on the die that Jenna rolls, Mary wins. If the number on the die that Jenna rolls is a factor of the number on the die that Mary rolls, Jenna wins. For how many possible rolls would both girls win?

Guest Oct 14, 2018
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If I understand the question correctly....20 possible winning rolls

 

If Mary and Jenns roll different numbers, the larger number cannot be a factor of the smaller

 

The only way that both win is if the numbers are the same, because a number is alway a factor of itself

 

cool cool cool

CPhill  Oct 14, 2018

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