In a committee 50 people speak French, 20 speak Spanish and 10 speak both Span

Question

In a committee 50 people speak French, 20 speak Spanish and 10 speak both Spanish and French. The number of persons speaking at least one of these two languages is

Options:

A . 60

B . 40

C . 38

D . 58

Answer: Option A
:
A

$n (S \cup F)$ = $n (S) + n (F) - n (S \cap F)$

$\Rightarrow n (S \cup F)$ = 20 + 50 -10 = 60

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