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A die has two faces with number 4, three faces with number 5 and one face with number 6. If the die is rolled once, then what is the probability of getting 4 or 5?

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NDA-II 2024 (Maths) Official Paper (Held On: 01 Sept, 2024)
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  1. 1/3
  2. 2/3
  3. 5/6
  4. 1/2

Answer (Detailed Solution Below)

Option 3 : 5/6
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Detailed Solution

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Explanation:

Number on faces on die are 4, 4, 5, 5, 5 and 6.

⇒n(S) = 6

P (getting 4 or 5) = 5/6

∴ Option (c) is correct

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