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Logical Reasonong (CCS)

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In a committee, 50 people speak Hindi, 20 speak English and 10 speak both English and Hindi. The number of persons speaking at least one of these two language is

none of these

Explanation:

Let F and F represent the set of people in the committee who speak Spanish and French respectively.
Given that n(F) = 50, n(S) = 20 and n(S ∩ F) = 10
Use the formula:
n(S ∪ F) = n(S) + n(F) - n(S ∩ F)
Plug the values, we get
20 + 50 - 10
70 - 10 = 60

Hence, option 2 is the correct answer.

By: Amit Kumar

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