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S

Sumimolss 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

Can the experimental probability of an event be a negative number? If not why?

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Sreedevi replied | 02/12/2016

The probability of the outcome of an experiment is never negative.

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Answer

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K

Kiran 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

Can the experimental probability of an event be greater than 1? Justify your answer?

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Sreedevi replied | 02/12/2016

No, because the number of successes and failures should be equal to 1.

0 0

Sreedevi replied | 02/12/2016

No, because the number of successes and failures should be equal to 1.
The probability of an event will not be less than 0. This is because 0 is impossible (sure that something will not happen). The probability of an event will not be more than 1. This is because 1 is certain that something will happen.

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M

Meraj 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

Find the probability of getting a number less than 5 in a single row of a die?

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Sreedevi replied | 02/12/2016

In the single throw of a die, the sample space n(S) = 6; let 'E' be the event of getting '5'. n(E) = 1; P(E) = n(E) /n(S); P(E) = 1/6.

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J

Jyoti 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

One card is drawn from a well shuffled deck of 52 cards. Find the probability of drawing an ace?

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Sreedevi replied | 02/12/2016

There will be 4 aces (Event E) that belongs to 4 different types say hearts, clubs, diamonds and spades. The probability of getting an ace of 52 cards (sample space = 52) is given by the ratio of favourable events to sample space.
P(E) = n(E) / n(S); P(E) = 4/52; P(E) = 1/4.

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R

Ravindra 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

Two dice are thrown. What is the probability of obtaining a total of 10 or 11?

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Mamata replied | 25/11/2016

Sample space = {(1,1), (1,2,), ........, (5,6), (6,1), (6,6)}
Number of sample space or cardinality of S = |s|= 36
Let A be the event of getting total of 10 or 11
A={(5,5),(5,6),(4,6),(6,4),(6,5)}.
|A|=5.
P(A)= |A|/|S|= 5 / 36.

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T

Thomas 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

Two dices are thrown simultaneously. Find the probability of getting: an even number as the sum?

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A

Anand 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

Two dices thrown simultaneously. Find the probability of getting: a total of at least 10?

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T

Thileshwari 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

What is the formula for probability of an event?

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D

Durgesh 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

A bag contains 50 coins and each coin marked from 51 to 100. One coin is picked up at random. What is the probability that the number on the coin is not a prime number?

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B

Bhupen 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

What is the probability of goal is from 10 kicks in a football match, a player makes 4 goals from 10 kicks?

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N

Nice 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

What do you mean by event and trial in refer to probability?

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V

Vishal 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

What is impossible event in probability?

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C

Chiranjib 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

As the number of tosses of a coin increases, the ratio of the number of heads to the total number of tosses will be 1/2. Is it correct or not?

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N

Nasar 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

17 cards numbered 1, 2, 3, ….., 16, 17 are put in box and mixed thoroughly. One person draws a card from the box. Find the probability that the number on the card?

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Answer

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A

Arvind 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

A die is thrown once. Find the probability of getting a number greater than 3?

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C

Chinmayee 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, find the number of blue balls in the bag?

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N

Nilam 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

A bag contains 12 balls out of which x are white, if one ball is drawn at random, What is the probability that it will be a white ball?

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S

Sitaram 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

5 male and 3 female candidates are available for selection as on manager in a company. Find the probability that male is selected?

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S

Swati 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

Cards marked with the numbers 2 to 101 are placed in a box and mixed thoroughly. One card is drawn from this box. Find the probability of a number which is a perfect cube?

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R

Rayaan 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

A card is drawn from an ordinary pack and a gambler bets that it is a spade or an ace. What are the odds his winning this bet?

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G

Gayathri 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

17 cards numbered 1, 2, 3,..., 16, 17 are put into a box and mixed thoroughly. One person draws a card from the box. Find the probability that the number on the card is a crime?

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S

Suresh 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

Tickets numbered 1 to 20 are mixed up together and then a ticket is drawn at random. What is the probability that the ticket has a number which is a multiple of 3 or 7?

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V

Vinodha 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

Find the probability of choosing square numbers between 2 and 100?

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M

Mohit 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

In a throw of a fair die, what is the probability of getting a number greater than 4?

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Y

Yatheesh 02/11/2016 in  Class IX-X Tuition, Mathematics(Class IX-X Tuition), Probability

What do you mean by probability?

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