Chance and probability

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Chance and probability: Overview

This topic contains concepts like Chance and Probability, Basic Understanding of Probability, Range of Probability and Probability when Outcome Has No Chance of Happening.

Important Questions on Chance and probability

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A box contains white ball, blue ball and violet ball of same shape and size. Athul picks a ball from the box randomly. What is the probability of getting a red ball?

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What is the probability of getting an odd number greater than 5 when the dice is rolled once?

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What is the probability of getting a number greater than 7 when the dice is rolled once?

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What is the probability of getting a number greater than 4 when the dice is rolled once?

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A box contains white ball, blue ball and violet ball each of same shape and size.Athul picks a ball from the box randomly. What is the probability of getting a white ball?

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What is the probability of getting an odd number when the die is rolled?

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A dice is thrown 100 times and the outcomes are noted as given below:

Outcome 1 2 3 4 5 6
Frequency 20 15 17 16 25 10

When a dice is thrown at random,the probability of getting 8 is zero.

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A bag contains 3 red and 2 blue marbles. A marble is drawn at random. What is the probability of drawing a green marble.

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A box containing 6 balls in which 3 are yellow, 2 are green and 1 is red. What is the probability of picking a red ball.

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There are 7 marbles in a box with numbers from 1to 7 marked on each of them. Find the probability of drawing a marble with number 3

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Two unbiased coins are tossed simultaneously. Find the probability of getting no heads

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From a class, a student is selected at random.

The probability of the student being a boy is $ \frac{5}{8}$.

The probability of the student being a girl is _____.

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Which of the following CANNOT be a probability of an event?

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Raju tossed a coin only once and he got the heads side of the coin.

The probability of Raju getting the heads is _____.

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David tosses a coin. David gets a chocolate, if heads or tails is the outcome. The probability of David getting a chocolate while tossing an unbiased coin is _____.

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Two teams are playing T20 cricket match. Team-B, who batted second, needed 3 runs to win when only one ball is remaining to be bowled.

The probability of team-B winning the match is _____.

(Note: Assume no wide and equal chance of getting any valid score from one ball.)

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The probability of getting an even number less than 5 when a die is thrown is:

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A jar contains 2 blue, 3 red, 5 yellow and 4 green marbles. If a marble is drawn at random from the jar, what is the probability that the marble drawn is not red ?

 

 

 

 

 

 

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The probability of an impossible event is 0 and that of a sure event is _____.

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A box contains pairs of socks of two colours (black and white). I have picked out a white sock. I pick out one more with my eyes closed. What is the probability that it will make a pair?