Asked by Moses
In a class of 43 students at least every one of them offers physics or geography. If 27 of them offers physics and 31 offers geography, how many of them offer both physics and geography
Answers
Answered by
Writeacher
Offer? I think you mean "... 43 students ... takes physics or geography ... "
The school offers the courses. The students take the courses.
The school offers the courses. The students take the courses.
Answered by
oobleck
27+31-x = 43
Time to review set unions and intersections and Venn diagrams...
Time to review set unions and intersections and Venn diagrams...
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