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In a group of students, each one knows either Hindi or English. If 100 know Hindi, 50 know English and 30 know both, how many students are there in group?

In a group of students, each one knows either Hindi or English. If 100 know Hindi, 50 know English and 30 know both, how many students are there in group? Correct Answer 120

The logic followed is:

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Therefore, the number of students in the group are 20 + 30 + 70 = 120

The number of students = 120

Hence, the correct answer is "120".

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