Question
span >The probability of selecting a rotten apple randomly from a heap of 700 apples is 0.36. What is the number of rotten apples in the heap?
Solution
Total number of apples in the heap = n(S) = 700
Let E be the event of selecting a rotten apple from the heap.
Number of outcomes favourable to E = n(E)
P(E) = n(E)/n(S)
0.36 = n(E)/700
⇒ n(E) = 700 × 0.36
⇒ n(E) = 252
Therefore, the number of rotten apples in the heap = 208
More Probability Questions
- A box contains 5 red, 4 green, and 3 blue balls. Two balls are drawn without replacement. What is the probability both are green?
- A bag contains 8 green balls, 5 yellow balls and 3 blue balls. Two balls are drawn simultaneously. Find the probability that both the balls are of same col...
- Find the probability of selecting a card that is not a face card from a well shuffled deck.
- A bag contains 5 red, 4 blue and 3 green balls (12 balls in total). Two balls are drawn at random without replacement. Find the probability that both balls...
- There are 2 boxes. Box A contains 6 gums and 4 candies and Box B contains 3 gums and 7 candies. If a box is selected at random and 2 things are drawn out o...
- In a bag, there are three different colour balls namely red, yellow and white. The sum of the number of yellow and red balls in the bag is equal to the num...
- There are twelve boxes out of which only four boxes contain chocolates, and remaining boxes are empty. You picked one of the boxes randomly. Now the owner ...
- A bag contains (K - 2) red balls, 8 black balls, and 14 blue balls. If two balls are drawn randomly, the probability that both are black is 2/27. Calculate...
- A bag contains 3 blue, 2 green, and 5 black pens. If five pens are selected randomly, what is the probability that exactly two are green and three are blac...
- A bag contains 6 white balls, 4 red balls and 5 green balls. Two balls are drawn simultaneously. Find the probability that both the balls are of same colou...
