A girl calculates that the probability of her winning the first prize in a lottery is $0.08$. If $6000$ tickets are sold, how many tickets she has bought?

A game consists of spinning an arrow that comes to rest at one of the regions $1,2$ or $3$ (shown in the adjoining figure). Are the outcomes $1,2$ and $3$ are equally likely to occur? Give reasons.

Out of $400$ bulbs in a box, $15$ bulbs are defective. One bulb is taken out at random from the box. Find the probability that the drawn bulb is not defective.

In a single throw of a die, find the probability of getting a number greater than $5$.

In a single throw of a die, find the probability of getting an odd prime number.

In a single throw of a die, find the probability of getting a number which is multiple of $3$ or $4$. 

A letter is chosen from the word 'TRIANGLE'. What is the probability that it is a vowel?

A bag contains $7$ black, $5$ red and $3$ white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is red.

A bag contains $7$ black, $5$ red and $3$ white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is black or white.