Question
The names of 7 students from section A, 5 students from section B and 3 students from section C were selected. The age of all the 15 students was different. Again, one name was selected from them and it was found that it was of section
B. What was the probability that it was the youngest student of the section B?
Solution
The total number of students = 15 When 1 name was selected from 15 names, the probability that he was of section B = 5/15 = 1/3 But from the question, there are 5 students from the section B and the age of all 5 are different therefore, the probability of selecting one i.e. youngest student from 5 students will be 1/5.
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...
Relevant for Exams:
