Asked by tomiwa

in a certain class of 40 students each student offers at least one of the mathematics and physics.If 22 students offer physics and 21 students offer mathematics,find how many students offer physics only

Answers

Answered by Writeacher
You mean "each student takes..."
The school offers classes; students take classes.
Answered by oobleck
If x take both, then
22+21-x = 40
Find x, and then 22-x take only physics
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