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Eighty-nine s...

Question

Eighty-nine students of class VIII appeared for a combined test in Maths and Physics. If $62$ students passed in both ; $4$ failed in Maths and Physics and $7$ failed only in Maths. How many passed in Physics. (Use a Venn-diagram)

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Solution

From the Venn diagram , $16 + 4 = 20$ failed in Physics.
So, $89 - 20 = 69$ students passed in Physics.

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