Grade 9 : Mathematics - 15. Probability (Set 1)

Question 1

A fair coin is tossed once. What is the probability of getting a Head?

Accepted Answer

B) $\frac{1}{2}$

Answer

A) $\frac{1}{4}$

Answer

C) $\frac{3}{4}$

Answer

D) 1

Question 2

A standard six-sided die is rolled once. What is the probability of obtaining an even number?

Accepted Answer

C) $\frac{1}{2}$

Answer

A) $\frac{1}{6}$

Answer

B) $\frac{1}{3}$

Answer

D) $\frac{2}{3}$

Question 3

What is the numerical probability of an impossible event?

Accepted Answer

A) 0

Answer

B) 0.5

Answer

C) 1

Answer

D) -1

Question 4

What is the probability of a sure or certain event?

Accepted Answer

C) 1

Answer

A) 0

Answer

B) 0.5

Answer

D) 100

Question 5

A container holds 5 red balls and 3 blue balls.

If one ball is drawn at random, what is the probability that it is red?

Accepted Answer

B) $\frac{5}{8}$

Answer

A) $\frac{3}{8}$

Answer

C) $\frac{1}{2}$

Answer

D) $\frac{5}{3}$

Question 6

What is the sum of the probabilities of all elementary events of an experiment?

Accepted Answer

C) 1

Answer

A) 0

Answer

B) 0.5

Answer

D) 2

Question 7

If the probability of an event $E$ is 0.35, what is the probability of 'not $E$'?

Accepted Answer

B) 0.65

Answer

A) 0.35

Answer

C) 0.75

Answer

D) 0.55

Question 8

When rolling a single 6-sided die, what is the probability of getting a number strictly greater than 4?

Accepted Answer

B) $\frac{1}{3}$

Answer

A) $\frac{1}{6}$

Answer

C) $\frac{1}{2}$

Answer

D) $\frac{2}{3}$

Question 9

A card is drawn from a well-shuffled deck of 52 playing cards. What is the probability of drawing an Ace?

Accepted Answer

C) $\frac{1}{13}$

Answer

A) $\frac{1}{52}$

Answer

B) $\frac{1}{26}$

Answer

D) $\frac{4}{13}$

Question 10

If two coins are tossed simultaneously, how many outcomes are in the sample space?

Accepted Answer

C) 4

Answer

A) 2

Answer

B) 3

Answer

D) 8

Question 11

A die is rolled once. What is the probability of rolling a prime number?

Accepted Answer

C) $\frac{1}{2}$

Answer

A) $\frac{1}{6}$

Answer

B) $\frac{1}{3}$

Answer

D) $\frac{2}{3}$

Question 12

Which of the following values cannot represent the probability of an event?

Accepted Answer

B) -1.5

Answer

A) $\frac{2}{3}$

Answer

C) 15%

Answer

D) 0.7

Question 13

A box contains 4 green pens, 6 blue pens, and 5 red pens.

If one pen is chosen at random, what is the probability that it is blue?

Accepted Answer

B) $\frac{2}{5}$

Answer

A) $\frac{4}{15}$

Answer

C) $\frac{1}{3}$

Answer

D) $\frac{3}{5}$

Question 14

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

Accepted Answer

A) $\frac{1}{5}$

Answer

B) $\frac{2}{5}$

Answer

C) $\frac{3}{5}$

Answer

D) $\frac{4}{5}$

Question 15

A die is thrown once. What is the probability of getting a number less than 7?

Accepted Answer

D) 1

Answer

A) 0

Answer

B) $\frac{1}{6}$

Answer

C) $\frac{5}{6}$

Question 16

A bag contains 10 black marbles and 10 white marbles.

What is the probability of randomly picking a black marble?

Accepted Answer

B) $\frac{1}{2}$

Answer

A) $\frac{1}{4}$

Answer

C) $\frac{3}{4}$

Answer

D) 1

Question 17

A spinner is divided into 4 equal regions numbered 1, 2, 3, and 4. What is the probability of spinning a 3?

Accepted Answer

A) $\frac{1}{4}$

Answer

B) $\frac{1}{2}$

Answer

C) $\frac{3}{4}$

Answer

D) $\frac{1}{3}$

Question 18

If the probability of winning a game is 0.8, what is the probability of losing it?

Accepted Answer

B) 0.2

Answer

A) 0.8

Answer

C) 0.1

Answer

D) 0.5

Question 19

A number is selected at random from 1 to 10 inclusive. What is the probability that it is divisible by 3?

Accepted Answer

B) $\frac{3}{10}$

Answer

A) $\frac{1}{10}$

Answer

C) $\frac{1}{5}$

Answer

D) $\frac{2}{5}$

Question 20

A card is drawn from a standard deck of 52 cards. What is the probability of drawing a red card?

Accepted Answer

B) $\frac{1}{2}$

Answer

A) $\frac{1}{4}$

Answer

C) $\frac{1}{13}$

Answer

D) $\frac{2}{13}$

Grade 9 : Mathematics - 15. Probability (Set 1)