Three-set Venn Diagram Problem 01

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A poll of students showed that

40% liked basketball,
45% liked soccer,
40% liked football,
15% liked both basketball and soccer,
20% liked both soccer and football,
20% liked both basketball and football, and
2% liked all three sports.

a. What percent of students liked only one sport?
b. What percent of students liked none of the three sports?

Ans: a. 21, b. 28

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