Engineering
Mathematics
Conditional Probability
Question

The probability of getting a number greater than 2 by throwing a fair dice is:

23

13

1

35

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Solution
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S = { 1, 2, 3, 4, 5, 6 }

n(S) = 6

E = event of getting a number greater than 2. 

∴ E = { 3, 4, 5, 6 } ⇒ n(E) = 4

Required prob = P(E) = n(E)n(S) = 46 = 23

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