How many ways are there to choose three donuts from 4 varieties if there must be an odd number of glazed donuts? the number of glazed must be 1 or 3?

asked May 26, 2019 161k views

2 votes

by Aet

5.2k points

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4 votes

1 glazed and 2 others or 3 glazed and 0 others

1 x 3 x 3 + 1 x 1 x 1

9 + 1

Answer: 10

Srikanth Sridhar answered May 30, 2019

5.8k points

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