Prasanna

A bag has 4 red and 2 yellow balls. A ball is drawn from the bag without looking into the bag. What is the probability of getting
(i) a red ball?
(ii) not a red ball?

Solution:

Three coins are tossed together, find the probability of getting
(i) atmost 2 heads
(ii) 3 heads.

Solution:

A letter is chosen from the word ‘RECTANGLE’. What is the probability that it is
(i) a consonant
(ii) not a consonant.

Solution:

More Solutions:

• The adjoining pie chart shows the number of students enrolled in class VI to class X of a school.
• List the outcomes you can see in these experiments.
• Two coins are tossed together. Find the probability
• Two dice are rolled simultaneously. Find the probability
• A letter is chosen from the word ‘TRIANGLE’. What is the probability that it is a vowel
• A box contains 17 cards numbered 1, 2, 3, ……….,17 and are mixed thoroughly.

Answer the following questions based on the pie chart given below:
(i) Which type of programmes are viewed the most?
(ii) Which type of programmes are viewed the least?
(iii) Which two types of programmes have number of viewers equal to those watching sports channels?

Solution:

Suppose you spin the wheel shown in adjoining figure.
(i) List the outcomes of getting a green sector and not getting a green sector on this wheel.
(ii) Find the probability of getting a green sector.
(iii) Find the probability of not getting a green sector.

Solution:

More Solutions:

• The histogram showing the weekly wages of workers in a factory is given alongside
• The number of literate females in the age group of 10 to 40 years in a town
• The following data represents the different number of animals in a zoo.
• The following data represents the monthly expenditure of a family on various items
• The following data represents the percentage distribution of the expenditure
• The following data represents the number of students got admission

The following data represents the number of students using a different mode of transportation to come to school.

Draw a pie chart to represent this data Pie chart is given below:

Solution:

More Solutions:

• The result of a survey of 200 people about their favourite fruit is given below
• Mr Khurana has two kitchen appliance stores.
• The number of goals scored by a football team in different matches is given below:
• Read the double bar graph carefully and answer the following questions:
• Given below are the marks secured by 35 students in a surprise test:
• The weights of 29 patients in a hospital were recorded as follows

Draw a histogram of the following data:
Marks obtained by students in a Mathematics Paper of maximum marks 100.

Solution:

More Solutions:

• The pie graph representing the different subjects liked by the students
• Probability of getting the sum as 4 when a pair of dice is rolled
• Probability of getting more than 2 heads when a pair of coins is tossed.
• Draw a pie chart of data given.The time spent by Class VIII student during a day
• From a bag containing 2 saffron, 3 white and 4 green balls a ball is drawn at random
• A bag contains 12 balls out of which x are black.

Construct a frequency distribution table for the following weights (in grams) of 35 oranges, using class intervals 40—45, 45-50 and so on.
30, 40, 45, 32, 43, 50, 55, 63, 72, 73, 62, 61, 54, 53, 50, 43, 76, 38, 54, 55, 66, 70, 74, 75, 45, 47, 59, 58, 60, 63, 74, 33, 35, 70, 68.
(i) How many classes are there in the frequency distribution table?
(ii) Which weight group has the lowest frequency?
(iii) Which weight group has the highest frequency?

Solution:

More Solutions:

• A letter is chosen from the word ‘TRIANGLE’. What is the probability that it is a vowel
• A box contains 17 cards numbered 1, 2, 3, ……….,17 and are mixed thoroughly.
• A card is drawn from a well-shuffled pack of 52 cards. Find the probability
• Bar graphs are ……….. representation of ungrouped data.
• The data arranged in ascending or descending order of size is called data array
• Study the following frequency distribution table. Choose the correct answer

Each student from the group of 40 students was asked to roll a dice independently. The results are given below:
2, 3, 3, 4, 1, 5, 2, 6, 1, 4, 2, 3, 4, 4, 6, 1, 5, 5, 2, 4, 5, 5, 3, 1, 6, 5, 4, 2, 3, 6, 1, 1, 4, 4, 5, 3, 2, 2, 6,6
Make a frequency distribution table for the same.

Solution:

The marks obtained by 30 students of a class in a test of maximum marks 20 are as follows:
15, 11, 12, 10, 9, 8, 19, 13, 16, 3, 2, 17, 18, 19, 14, 6, 20, 15, 16, 12, 10, 4, 9, 8, 12, 17, 18, 20, 19, 12.
Prepare a frequency distribution table for the above data using class intervals 0-4, 4-8 and so on.

Solution:

More Solutions:

• The pie graph representing the different subjects liked by the students
• Probability of getting the sum as 4 when a pair of dice is rolled
• Probability of getting more than 2 heads when a pair of coins is tossed.
• Draw a pie chart of data given.The time spent by Class VIII student during a day
• From a bag containing 2 saffron, 3 white and 4 green balls a ball is drawn at random
• A bag contains 12 balls out of which x are black.

A bag contains 12 balls out of which x are black.
(i) If a ball drawn at random, what is the probability that it will be a black ball?
(ii) If 6 more black balls are put in the bag, the probability of drawing a black ball will be double than that of (i). Find the value of x.

Solution:

Ankita and Nagma are friends. They were both born in 1998. What is the probability that they have
(i) same birthday?
(ii) different birthday?

Solution:

More Solutions:

• The result of a survey of 200 people about their favourite fruit is given below
• Mr Khurana has two kitchen appliance stores.
• The number of goals scored by a football team in different matches is given below:
• Read the double bar graph carefully and answer the following questions:
• Given below are the marks secured by 35 students in a surprise test:
• The weights of 29 patients in a hospital were recorded as follows

From a bag containing 2 saffron, 3 white and 4 green balls a ball is drawn at random. Find the probability that ball drawn is
(i) Saffron
(ii) White
(iii) Green
Which are three colours in our National Flag? What values did they indicate? What values are being promoted?

Solution:

Four defective oranges are accidentally mixed with 16 good ones. One orange is drawn at random. Find the probability that the orange drawn is good one.
What will happen if 4 bad persons are mixed with 16 good ones?

Solution:

More Solutions:

• The adjoining pie chart shows the number of students enrolled in class VI to class X of a school.
• List the outcomes you can see in these experiments.
• Two coins are tossed together. Find the probability
• Two dice are rolled simultaneously. Find the probability
• A letter is chosen from the word ‘TRIANGLE’. What is the probability that it is a vowel
• A box contains 17 cards numbered 1, 2, 3, ……….,17 and are mixed thoroughly.
• A card is drawn from a well-shuffled pack of 52 cards. Find the probability

Draw a pie chart of the data given below:
The time spent by a Class VIII student during a day.

Should a student of class VIII study for just 2 hours daily? Which time is considered the best time for self-study?

Solution:

More Solutions:

• The number of literate females in the age group of 10 to 40 years in a town
• The following data represents the different number of animals in a zoo.
• The following data represents the monthly expenditure of a family on various items
• The following data represents the percentage distribution of the expenditure
• The following data represents the number of students got admission
• The adjoining pie chart shows the expenditure of a country on various sports

Probability of getting more than 2 heads when a pair of coins is tossed.
(a) 1
(b)
(c)
(d) 0

Solution:

Probability of getting a red ball from a bag containing 20 red balls
(a) 0
(b) 1
(c)
(d)

Solution:

Probability of getting a non-red ball from a bag containing 4 red, 5 blue and 3 black balls is

Solution:

More Solutions:

• The number of literate females in the age group of 10 to 40 years in a town
• The following data represents the different number of animals in a zoo.
• The following data represents the monthly expenditure of a family on various items
• The following data represents the percentage distribution of the expenditure
• The following data represents the number of students got admission
• The adjoining pie chart shows the expenditure of a country on various sports