Asked by Ayisat
In a certain examination 52 candidates offered biology 60 history 96 maths 21 offered both biology and history 22 math and biology 16 math and history if 7 candidates offered all three subject represent the information on a venn diagram how many candidates were there for examination how many candidates offered one subject only how many candidates offered two subject only how many candidates offered at least two subject
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Answered by
Ayisat
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Answered by
Ayisat
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Answered by
oobleck
impatient much?
give somebody a chance to happen to see what's up.
So - did you actually make a Venn diagram? You have all the numbers.
21-7 = 14 take <u>only</u> biology and history
16-7 = 9 take <u>only</u> math and history
22-7 = 15 take <u>only</u> math and biology
Now you can fill in the numbers for the remaining pieces, which will show how many are taking only a single subject
Then it is trivial to answer the questions.
give somebody a chance to happen to see what's up.
So - did you actually make a Venn diagram? You have all the numbers.
21-7 = 14 take <u>only</u> biology and history
16-7 = 9 take <u>only</u> math and history
22-7 = 15 take <u>only</u> math and biology
Now you can fill in the numbers for the remaining pieces, which will show how many are taking only a single subject
Then it is trivial to answer the questions.
Answered by
Rahmat
No
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