Mel J.

asked • 05/08/21

Combinations Question (Please provide an explanation!)

  1. There are 140 students in the entire 12th Grade class.
  2. 52 signed up for biology.
  3. 71 signed up for chemistry.
  4. 40 signed up for physics.
  5. 15 signed up for biology and chemistry
  6. 8 signed up for chemistry and physics.
  7. 11 signed up for biology and physics.
  8. 2 signed up for all 3 sciences.

a) How many students are NOT taking any science?

The answer for a) is 9, why is that? Explain if can.


b) Illustrate this using a Venn diagram.


Please provide an explanation, I don't understand.

Mark M.

Have you examined any examples of problems solved with Venn Diagrams?
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05/08/21

Mark M.

Message me when you have drawn and label the three intersecting circles of a Venn diagram.
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05/08/21

Mel J.

I did that
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05/08/21

Wendy D.

tutor
Have you put numbers, representing the students in the class, in each section of the Venn diagram?? If not, find the circle that represents the biology class. If it is not labeled yet, label it. Put "52" in the part of the circle that does NOT overlap another circle. Continue, filling in the rest of the Venn diagram.
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05/08/21

2 Answers By Expert Tutors

By:

Mark M. answered • 05/08/21

Tutor
5.0 (243)

Mathematics Teacher - NCLB Highly Qualified

Mel J.

Thank you!
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05/08/21

Mel J.

Thank you so much, your video was very helpful! I really appreciate the help.
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05/08/21

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