Vistor Chow wal keung | RC Yadav Solutions for Chapter: Probability, Exercise 2: REVIEW EXERCISE

There are 9 marbles in a box marked as $1, 2, 3, 4, 5, 6, 7, 8$ and $9.$ A marble is drawn at random. What is the probability of drawing marble with number $3?$

There are 9 marbles in a box marked as $1, 2, 3, 4, 5, 6, 7, 8$ and $9.$ A marble is drawn at random. What is the probability of drawing marble with number $7$ or $9$ ?

A store has $15$ LCD TV sets and $n$ Smart TV sets on display. A TV set at random and the probability of selling a Smart TV set is $\frac{4}{9}$ Find the value of $n$.

In a batch of 20 vases, there are four defective vases. A quality control inspector checks the vases in the batch one by one without repetition. Find the probability that the first vase checked is defective.

In a batch of $20$ vases, there are four defective vases. A quality control inspector checks the vases in the batch one by one without repetition. If the first vase checked is defective, find the probability that the second vase checked is also defective.

A day of the week is chosen at random. Find the probability that the day chosen is a Monday

A day of the week is chosen at random. Find the probability that the day chosen is a day that has the letter 'u' in its spelling.

A multiple choice question has five options and only one of them is the correct answer. If a boy picks an option at random, what is the probability that it is not the correct answer?