Asked by david
In a class of 40 students 18 passed economics 19 passed accounts 16 passed economics 6 passed mathematics only 9 passed accounts only 5 passed mathematics and accounts only 2 passed accounts and economics only. How many failed in all the papers? How many failed in economics? How many failed in accounts?
Answers
Answered by
Steve
Assuming you meant 16 passed math,
Draw your Venn diagram and start filling in the missing pieces.
3 passed all three subjects
7 passed E and M
1 passed M only
So, 33 passed something.
I expect you can take it from there.
Draw your Venn diagram and start filling in the missing pieces.
3 passed all three subjects
7 passed E and M
1 passed M only
So, 33 passed something.
I expect you can take it from there.
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