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प्रश्न
150 students are studying English, Maths or both. 62 per cent of students study English and 68 per cent are studying Maths. How many students are studying both?
उत्तर
Total students = 150
Students who study English = 62% of 150
`\implies` `62/100 xx 150` = 93
Students who study Maths = 68% of 150
`\implies` `68/100 xx 150` = 102
Total students studying English or Maths = 93 + 102 = 195
∴ Students who study English and Maths both
`\implies` 195 – 150
`\implies` 45
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