Question
The probability of selecting a rotten egg randomly from
a basket of 600 eggs is 0.14. What is the number of rotten eggs in the basket?Solution
Total number of eggs in the basket = n(S) = 600 Let E be the event of selecting a rotten egg from the basket. Number of outcomes favourable to E = n(E) P(E) = n(E)/n(S) 0.14 = n(E)/600 ⇒ n(E) = 600 × 0.14 ⇒ n(E) = 84 Therefore, the number of rotten eggs in the basket = 84
A 240 m long train crosses a platform twice its length in 3 min. Find the speed of the train.
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