Test: Probability- 1 - Class 9 MCQ

Gugu throws a die once. The probability that she shows a number less than 5 is :

If each observation of the data is increased by 5, then their mean

Weather forecast from a news channel was correct 125 times out of 365 days. The probability that on a given day it was not correct is

Two coins are tossed simultaneously 300 times. Either one or two heads are obtained 198 times. The probability of getting no head is

Two coins are tossed simultaneously. Then, the probability of getting at most one head is

Which of the following cannot be the empirical probability of an event ?

A standard deck of 52 cards is shuffled. One card is drawn at random. The probability that the card is red or an ace is

A fair die is tossed. Then, the probability of not rolling a number less than 5 is

Two coins are tossed 1000 times and the outcomes are recorded as below

Based on this information, the probabilty for at most one head is

1000 tickets of a lottery were sold and there are 5 prizes on these tickets. If Ruchi purchased one lottery ticket, the probability of winning prize is

A die is thrown once. The probability of getting a number 3 or 4 is

A die is thrown once. The probability of getting a number greater than 3 is

Two unbiased coins are tossed simultaneously. The probability of getting at least one head is

The probability of getting 53 Sundays in a leap year is

A marble is drawn at random from a bag. If the bag contains 6 blue and 4 green marbles, the probability that the marble is green, is

Twenty balls are serially numbered and placed in a bag. The probability that a ball drawn is a multiple of 3 or 5, is

If the probability of winning a game is 0.3, the probability of losing it is

Two dice are thrown simultaneously. The probability of getting a doublet or a total of 4 is

A bag contains 5 red balls and some blue balls. The probability of drawing a blue ball is double that of a red ball. The number of blue balls in the bag is

A bag contains 12 balls out of which x are white. If one ball is drawn at random, the probability that it will be a white ball is x/12. If 6 more white balls are put in the bag, the probability of drawing a white ball will be double than that obtained in .find x.

Cards marked with the numbers 2 to 101 are placed in a box and mixed thoroughly. One card is drawn from this bag. The probability that the number of the card is a prime number less than 20 is

The king, queen and jack of clubs are removed from a deck of 52 playing cards and then well shuffled. One card is selected from the remaining cards. The probability of getting a club is