R S Aggarwal and Veena Aggarwal Solutions for Exercise 1: Exercise 19A

A box contains $90$ discs which are numbered from $1$ to $90$. If one disc is drawn at random from the box, find the probability that it bears a two-digit number.

A box contains $90$ discs which are numbered from $1$ to $90$. If one disc is drawn at random from the box, find the probability that it bears a perfect square number.

A box contains $90$ discs which are numbered from $1$ to $90$. If one disc is drawn at random from the box, find the probability that it bears a number divisible by $5$.

Two different dice are thrown together. Find the probability that the numbers obtained is a doublet of odd numbers.

The king, the jack and the $10$ of spades are lost from a pack of $52$ cards and a card is drawn from the remaining cards after shuffling. Find the probability of getting a red card. (Write the final answer in its simplest fraction form)

The king, the jack and the $10$ of spades are lost from a pack of $52$ cards and a card is drawn from the remaining cards after shuffling. Find the probability of getting a black jack.

The king, the jack and the $10$ of spades are lost from a pack of $52$ cards and a card is drawn from the remaining cards after shuffling. Find the probability of getting a

red king

The king, the jack and the $10$ of spades are lost from a pack of $52$cards and a card is drawn from the remaining cards after shuffling. Find the probability of getting a

 $10$ of hearts