CBSE Questions for Class 9 Maths Probability Quiz 2 - MCQExams.com

In a survey of $$364$$ children aged $$19-36$$ months, it was found that $$91$$ liked to eat potato chips. If a child is selected at random, the probability that he/she does not like to eat potato chips is :
  • $$0.25$$
  • $$0.50$$
  • $$0.75$$
  • $$0.80$$

A coin is tossed $$150$$ times and the outcomes are recorded. The frequency distribution of the outcomes $$H$$ (i.e., head) and $$T$$ (i.e., tail) is given below :

Outcome$$H$$$$T$$
Frequency$$85$$$$65$$

Find the value of $$P(H)$$, i.e., probability of getting a head in a single trial.
  • $$P(H) =0.769$$ (approx)
  • $$P(H) =0.663$$ (approx)
  • $$P(H) =0.567$$ (approx)
  • None of these
To know the opinion of the student about the subject statistic, a survey of $$200$$ students was conducted.

The data is recorded in the following table

OpinionLikeDislike
No. of Students$$135$$$$65$$

Find the probability that a student chosen at random

$$(i)$$ likes statistics, $$(ii)$$ does not like it.
  • $$(i) \displaystyle \frac{13}{40} $$

    $$(ii) \displaystyle \frac{19}{40} $$
  • $$(i) \displaystyle \frac{27}{40} $$

    $$(ii) \displaystyle \frac{13}{40} $$
  • $$(i)\displaystyle \frac{17}{40} $$

    $$(ii) \displaystyle \frac{29}{40} $$
  • None of these
On one page of a telephone directory there were $$200$$ telephone numbers. The frequency distribution of their unit place digit is given in the following table:
Digit$$0$$$$1$$$$2$$$$3$$$$4$$$$5$$$$6$$$$7$$$$8$$$$9$$
Frequency$$22$$$$26$$$$22$$$$22$$$$20$$$$10$$$$14$$$$28$$$$16$$$$20$$

  • $$0.15$$

  • $$0.17$$

  • $$0.18$$
  • None of these
A couple of dice rolled. What is the empirical probability of getting the sum as $$5$$?
  • $$\dfrac{3}{2}$$
  • $$\dfrac{1}{9}$$
  • $$\dfrac{5}{2}$$
  • $$\dfrac{7}{2}$$
A survey was conducted by car manufacturing company in a metropolitan city on $$1000$$ persons having monthly income from Rs. $$30,001$$ to Rs. $$50,000$$. The data about the number of persons in various categories is as under:

Monthly income



Number of Cars



(in rupees)



$$1$$



$$2$$



More than $$2$$



$$30,001-40,000$$



$$400$$



$$50$$



$$25$$



$$40,001-50,000$$



$$100$$



$$300$$



$$125$$


 Find the probability that a person selected at random in the income slab $$40,001-50,000$$ have more than $$2$$ cars.
  • $$0.125$$
  • $$0.225$$
  • $$0.325$$

  • None of thesee
You have a spinning wheel with 3 green sectors, 1 blue sector and 1 red sector,  if the probability of getting a non-blue sector is $$\dfrac{4}{m}$$. Then, the  value of $$m$$ is 
301725_976a2a23e4b34e3c9338cfcaed86c713.PNG
  • $$5$$
  • $$4$$
  • $$3$$
  • $$1$$

The record of a weather station shows that out of the past $$250$$ consecutive days, its weather forecasts were correct $$175$$ times. What is the probability that on a given day it was correct?
  • $$0.9$$
  • $$0.8$$
  • $$0.7$$
  • $$0.6$$
A box has tokens numbered $$3$$ to $$100$$. If a token is taken out at random the chance that the number is divisible by $$7$$ is
  • $$\dfrac{1}{4}$$
  • $$\dfrac{1}{5}$$
  • $$\dfrac{1}{6}$$
  • $$\dfrac{1}{7}$$
A box contains $$32$$ coloured marbles. $$8$$ of them are red marbles and the rest are either blue or green marbles. A marble is drawn at random. Calculate the probability of drawing a marble which is not red in colour.
  • $$\dfrac {2}{3}$$
  • $$\dfrac {5}{8}$$
  • $$\dfrac {3}{4}$$
  • $$\dfrac {7}{16}$$
Find the chance that a non-leap year contains $$53$$ Saturdays
  • $$\dfrac {2}{7}$$
  • $$\dfrac {1}{7}$$
  • $$\dfrac {2}{365}$$
  • $$\dfrac {1}{365}$$
A card is drawn from a well shuffled deck of $$52$$ cards. Find the probability of getting a club card?
  • $$\dfrac {1}{2}$$
  • $$\dfrac {3}{4}$$
  • $$\dfrac {1}{4}$$
  • $$1$$
Observe the table given.
ClubEnglishMathsScience
Number of students$$99$$$$121$$$$154$$
A student is chosen randomly from the group as the co-ordinator of all the clubs. What is the probability that the student is from the science club?
  • $$\dfrac {7}{17}$$
  • $$\dfrac {9}{34}$$
  • $$\dfrac {10}{17}$$
  • $$\dfrac {11}{34}$$
From a normal pack of cards, a card is drawn at random. Find the probability of getting a jack or a king.
  • $$\dfrac {2}{52}$$
  • $$\dfrac {1}{52}$$
  • $$\dfrac {2}{13}$$
  • $$\dfrac {1}{26}$$
A bag contains a number of marbles of which $$80$$ are red, $$24$$ are white and the rest are blue. If the probability of randomly selecting a blue marble from this bag is $$\dfrac {1}{5}$$, how many blue marbles are there in the bag?
  • $$25$$
  • $$26$$
  • $$27$$
  • $$28$$
A card is drawn from a well-shuffled deck of playing cards. Find the probability of drawing a face card.
  • $$\dfrac { 8 }{ 13 } $$
  • $$\dfrac { 3 }{ 13 } $$
  • $$\dfrac { 4 }{ 13 } $$
  • $$\dfrac { 1 }{ 4 } $$
A card is drawn at random from a pack of well shuffled $$52$$ cards. What is the probability of getting a queen of red suit?
  • $$\dfrac { 1 }{ 26 } $$
  • $$\dfrac { 1 }{ 13 } $$
  • $$\dfrac { 1 }{ 52 } $$
  • $$\dfrac { 1 }{ 14 } $$
In a single throw of two dice, find the probability that neither a doublet nor a total of 8 will appear.
  • $$\cfrac{11}{36}$$
  • $$\cfrac{5}{18}$$
  • $$\cfrac{13}{18}$$
  • $$\cfrac{3}{16}$$
Bag contains $$100$$ tickets bearing numbers $$1-100$$. A ticket is taken out randomly, find the probability getting of a even numbered ticket.
  • $$0.5$$
  • $$0.4$$
  • $$1.0$$
  • $$0.05$$
In a non-leap year the probability of getting $$53$$ Sundays or $$53$$ Tuesdays or $$53$$ Thursdays is.
  • $$\dfrac {1}{7}$$
  • $$\dfrac {2}{7}$$
  • $$\dfrac {3}{7}$$
  • $$\dfrac {4}{7}$$
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