12 Questions
| Attempts: 1331

This is a self-check quiz on probability. Take this quiz and see how well do you know about it!

Questions and Answers

- 1.The letters of the name SMISS are arranged in a line. If an arrangement is chosen at random, what is the probability that the three Ss are together?
- A.
0.6

- B.
0.3

- C.
0.1

- D.
0.4

- 2.A box contains 36 marbles. If a marble is picked at random, the probability of being red is 2/9. How many red marbles should be added to make this probability 1/3?
- A.
6

- B.
4

- C.
12

- D.
9

- 3.An identity card is picked at random. What is the probability that the sum of the last two digits of its number is 9?
- A.
0.5

- B.
0.4

- C.
0.1

- D.
0.2

- 4.One of the 5 points (3, 2), (2, 1), (1, - 4), (5, 5) and (4, 6) is selected at random. What is the probability that it lies on the straight line 3
*x*– 2*y*= 5?- A.
0.4

- B.
0.2

- C.
0.1

- D.
0.5

- 5.The letters of the word “PROBABILITY” are written on cards and the cards are then shuffled. If a card is picked at random, find the probability that it will contain a vowel.
- A.
5/11

- B.
3/11

- C.
7/11

- D.
4/11

- 6.I have two 10-cent coins, three 20-cent coins, four 50-cent coins and five $1 coins in my pocket. If I choose a coin at random, find the probability that the coin is worth at least 50 cents.
- A.
4/7

- B.
3/7

- C.
9/14

- D.
5/14

- 7.A man tosses two fair dice. One is numbered 1 to 6 in the usual way and the other is numbered 1, 3, 5, 7, 9 and 11. Find the probability that the total of the two numbers shown is greater than 10.
- A.
7/12

- B.
5/12

- C.
1/2

- D.
1/4

- 8.A card is drawn at random from a normal pack of 52 cards. If A represents the event that the card drawn is a Queen and B represents the event that the card drawn is a Heart. Find P(A|B).
- A.
5/13

- B.
1/4

- C.
4/13

- D.
1/52

- 9.Two fair dice, one red and one blue, are tossed. What is the probability that the total of the numbers shown by the two dice exceeds 3?
- A.
1/3

- B.
1/4

- C.
11/12

- D.
1/12

- 10.A bag contains 30 balls. The balls are numbered 1,2,3,4 ….30. A ball is drawn at random. Find the probability that the number on the ball is a prime number.
- A.
8/9

- B.
2/3

- C.
1/3

- D.
4/9

- 11.An interview with 18 people revealed that 5 of the 8 women and 8 of the 10 men preferred drinking coffee to tea. What is the probability that if one person is selected from the group of 18 people, it is either a woman or someone who preferred to drink coffee than tea?
- A.
8/9

- B.
1/3

- C.
1/9

- D.
2/3

- 12.A computer generates 4-digit random numbers in the range 0000 to 9999 inclusive. Find the probability that the computer produces a random number that begins and ends with the digit 1.
- A.
1/10

- B.
1/4

- C.
1/1000

- D.
1/100

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