EASY
9th CBSE
IMPORTANT
Earn 100

Define an event.

Important Questions on Probability

EASY
9th CBSE
IMPORTANT

Define probability of an event.

MEDIUM
9th CBSE
IMPORTANT
A bag contains 4 white balls and some red balls. If the probability of drawing a white ball from the bag is 25, find the number of red balls in the bag.
MEDIUM
9th CBSE
IMPORTANT
A die is thrown 100 times. If the probability of getting an even number is 25. How many times an odd number is obtained
EASY
9th CBSE
IMPORTANT

Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes:

Outcome 3 heads 2 heads 1 heads No heads
Frequency 23 72 77 28

Find the probability of getting at most two heads.

EASY
9th CBSE
IMPORTANT

Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes:

Outcome 3 heads 2 heads 1 heads No heads
Frequency 23 72 77 28

What is the probability of getting at least two heads?

EASY
9th CBSE
IMPORTANT

The probability of an impossible event is

EASY
9th CBSE
IMPORTANT
The probability of a certain event is
EASY
9th CBSE
IMPORTANT
The probability an event of a trial is