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Analytical Puzzles Medium 2 min

A company has 120 employees. 70 know Python, 50 know Java, and 30 know both. How many know at least one of the two languages?

Hint
Use the inclusion-exclusion principle.

Answer

90 employees.

Explanation

The number knowing at least one language is 70 + 50 - 30 = 90.

Step-by-Step Solution

Python = 70.
Java = 50.
Both = 30.
At least one = 70+50-30 = 90.
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