In a committee 50 people speak Hindi 20 speak English and 10 speak both English and Hindi The number...........

Logical Reasoning(Master ) Logical Venn Diagrams

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

छोटे Courses बड़े Results

Master Logical Venn Diagrams

Prepare through Micro-courses

Try Now

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.