COMEDK · Maths · 36. Probability
The mean of the numbers obtained on throwing a die having written '1' on three faces, '2' on two faces and '5' on one face is:
- A 2
- B \(\dfrac{8}{3}\)
- C 1
- D 5
Answer & Solution
Correct Answer
(A) 2
Step-by-step Solution
Detailed explanation
The die has 6 faces in total. The distribution of numbers on the faces is as follows: Number 1 appears on 3 faces. The probability \(P(X=1) = \dfrac{3}{6} = \dfrac{1}{2}\). Number 2 appears on 2 faces. The probability \(P(X=2) = \dfrac{2}{6} = \dfrac{1}{3}\). Number 5 appears on…
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