Probability Quiz

One card is drawn from a well-shuffled deck of 52 cards. Calculate the probability that the card will :

(i) be an ace,

• 2/13

• 5/13

• 1/13

• 0

12 defective pens are accidentally mixed with 132 good ones. It is not possible to just look at a pen and tell whether or not it is defective. One pen is taken out at random from this lot. Determine the probability that the pen is taken out is a good one.

• 15/24

• 11/12

• 1/3

• 7/12

The probability that a non-leap year selected at random will contain 53 Sundays is :

• 1/7

• 4/7

• 6/7

• 2/7

A die is thrown twice. What is the probability that 5 will not come up either time ?

• 19/36

• 25/36

• 13/36

• 15/36

An integer is chosen between 0 and 100. What is the probability that it is not divisible by 7 ?

• 72/99

• 75/99

• 85/99

• 88/99

A card is drawn at random from a well shuffled pack of 52 playing cards. Find the probability of getting neither a red card nor a queen.

• 5/28

• 9/13

• 12/13

• 7/13

All red face cards art removed from a pack of playing cards. The remaining cards were well shuffled and then a card is drawn at random from them. Find the probability that the drawn card is a card of club .

• 8/23

• 11/46

• 13/46

• 17/23

A bag contains 18 balls out of which x balls are red. If 2 more red balls are put in the bag, the probability of drawing a red ball will be 9/8 times the probability of drawing a red ball in the first case. Find the value of X.

• 4

• 8

• 15

• 7

All the black face cards are removed from a pack of 52 playing cards. The remaining cards are well shuffled and then a card is drawn at random. Find the probability of getting a face card.

• 7/23

• 4/23

• 5/23

• 3/23

Cards numbered 1 to 30 are put in a bag. A card is drawn at random from this bag. Find the probability that the number on the drawn card is not a perfect square number .

• 2/7

• 5/6

• 1/6

• 4/7