Find the probability of each when a die is roll once: Event Favourable outcomes(s) Number of favourable outcome(s) Total possible outcomes Number of total possible outcomes Probability = N u m b e r o f f a v o u r a b l e o u t c o m e s N u m b e r o f t o t a l p o s s i b l e o u t c o m e s Getting a number 5 on the top face 5 1 1 , 2 , 3 , 4 , 5 and 6 6 1 6 Getting a number more than 3 on the top face Getting a prime number on the top face A number less than 5 on the top face A number that is factor of 6 on the top face A number more than 7 on the top face A number multiple of 3 on the top face Getting a number 6 or less than 6 on the top face

The given table is as follows; Event Favourable outcomes(s) Number of favourable outcome(s) Total possible outcomes Number of total possible outcomes Probability = N u m b e r o f f a v o u r a b l e o u t c o m e s N u m b e r o f t o t a l p o s s i b l e o u t c o m e s Getting a number 5 on the top face 5 1 1 , 2 , 3 , 4 , 5 and 6 6 1 6 Getting a number more than 3 on the top face Getting a prime number on the top face A number less than 5 on the top face A number that is factor of 6 on the top face A number more than 7 on the top face A number multiple of 3 on the top face Getting a number 6 or less than 6 on the top face We know that, probability is a branch of mathematics that studied the likelihood, or chance of a phenomenon happening. A random experiment is a process in which the result cannot be predicted with certainty. Hence, the full table is shown below; Event Favourable outcomes(s) Number of favourable outcome(s) Total possible outcomes Number of total possible outcomes Probability = N u m b e r o f f a v o u r a b l e o u t c o m e s N u m b e r o f t o t a l p o s s i b l e o u t c o m e s Getting a number 5 on the top face 5 1 1 , 2 , 3 , 4 , 5 and 6 6 1 6 Getting a number more than 3 on the top face 4 , 5 , 6 3 1 , 2 , 3 , 4 , 5 and 6 6 3 6 = 1 2 Getting a prime number on the top face 2 , 3 , 5 3 1 , 2 , 3 , 4 , 5 and 6 6 3 6 = 1 2 A number less than 5 on the top face 1 , 2 , 3 , 4 4 1 , 2 , 3 , 4 , 5 and 6 6 4 6 = 2 3 A number that is factor of 6 on the top face 1 , 2 , 3 , 6 4 1 , 2 , 3 , 4 , 5 and 6 6 4 6 = 2 3 A number more than 7 on the top face 0 0 1 , 2 , 3 , 4 , 5 and 6 6 0 6 = 0 A number multiple of 3 on the top face 3 , 6 2 1 , 2 , 3 , 4 , 5 and 6 6 2 6 = 1 3 Getting a number 6 or less than 6 on the top face 1 , 2 , 3 , 4 , 5 and 6 6 1 , 2 , 3 , 4 , 5 and 6 6 6 6 = 1

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Earn 100

If three coins are tossed simultaneously then find the probability of getting no tails.

Important Questions on Probability

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Mathematics Class 9>Chapter 14 - Probability>TRY THIS

Find the probability of each when a die is roll once:

Event	Favourable outcomes(s)	Number of favourable outcome(s)	Total possible outcomes	Number of total possible outcomes	Probability $= \frac{N u m b e r o f f a v o u r a b l e o u t c o m e s}{N u m b e r o f t o t a l p o s s i b l e o u t c o m e s}$
Getting a number $5$ on the top face	$5$	$1$	$1, 2, 3, 4, 5$ and $6$	$6$	$\frac{1}{6}$
Getting a number more than $3$ on the top face
Getting a prime number on the top face
A number less than $5$ on the top face
A number that is factor of $6$ on the top face
A number more than $7$ on the top face
A number multiple of $3$ on the top face
Getting a number $6$ or less than $6$ on the top face

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Mathematics Class 9>Chapter 14 - Probability>TRY THESE>Q 1

From the figure given;

Question Image

Find the probability of the dart hitting the board in the circular region $B$ (i.e Ring $B$ )

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Mathematics Class 9>Chapter 14 - Probability>TRY THESE>Q 2

From the figure given;

Question Image

Write the percentage of probability of the dart hitting the board in circular region $C$ (i.e ring $C$ )

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Mathematics Class 9>Chapter 14 - Probability>EXERCISE - 14.1>Q 1

A die has six faces numbered from $1$ to $6$ . It is rolled and the number on the top face is noted. When this is treated as a random trial, what are the possible outcomes?

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Mathematics Class 9>Chapter 14 - Probability>EXERCISE - 14.1>Q 1

A die has six faces numbered from $1$ to $6$ . It is rolled and the number on the top face is noted. When this is treated as a random trial, are the possible outcomes are equally likely? Why?

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Mathematics Class 9>Chapter 14 - Probability>EXERCISE - 14.1>Q 1

A die has six faces numbered from $1$ to $6$ . It is rolled and the number on the top face is noted. When this is treated as a random trial, find the probability of a composite number turning up on the top of the face.

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Mathematics Class 9>Chapter 14 - Probability>EXERCISE - 14.1>Q 2

A coin is tossed $100$ times and the following outcomes are recorded.

Head: $45$ times Tails: $55$ times from an experiment.

Compute the probability of each outcome.

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Mathematics Class 9>Chapter 14 - Probability>EXERCISE - 14.1>Q 2

A coin is tossed $100$ times and the following outcomes are recorded.

Head: $45$ times Tails: $55$ times from an experiment.

Find the sum of probabilities of all outcomes.

If three coins are tossed simultaneously then find the probability of getting no tails.

Important Questions on Probability

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