In a group of students, $100$ students know Hindi, $50$ knows English and $25$ knows both. Each of the students knows either Hindi or English. How many students are there in the group

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Solution

Hindi $= 100$

English $= 50$

Both $= 25$

$H \cup E = 100 + 50 - 25$

$= 150 - 25$

$= 125$

$125$ Students are there.

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