Page 208 - Maths Skills - 8

206 Maths

marked as Assertion (A) and Reason (R). Mark your like tennis, 150 like basketball and the remaining
answer as per the codes provided below: do not like any game. Represent the above data
(a) Both A and R are true and R is the correct by a pie diagram.
explanation of A. 2. 850 tickets of a lottery were sold and there are
(b) Both A and R are true but R is not the correct 17 prizes on these tickets. If Mr. Sharma has
explanation of A. purchased one ticket, what is the probability of
(c) A is true but R is false. 3. winning a prize?
A bag contains 6 red balls, 3 black balls and 5
(d) A is false but R is true. white balls. A ball is drawn out of the bag at

Q. 1. Assertion (A): The probability of an event is random. What is the probability that the ball is.
always exists between 0 and 1. (i) red

Reason (R): Probability is defined as the ratio of (ii) white
the number of favourable outcomes to the total
number of possible outcomes. (iii) black
Q. 2. Assertion (A): The largest slice of a pie-chart (iv) green
represents the category with most data points. 4. 12 cards numbered 1, 2, 3, 4, ... 11, 12 are kept
Reason (R): Pie charts are useful tool for showing in a box and mixed thoroughly. If one card is
how different parts contribute to the whole. drawn at random, find the probability of getting
a card with

(i) an odd number
SUBJECTIVE TYPE QUESTIONS
(ii) a factor of 12
F. Solve the following word problems (iv) a multiple of 2
1. Out of 2500 students in a school, 1000 students (iii) a number divisible by 3
like cricket, 650 students like football, 450 students

INTEGRATED QUESTION

G. The table given below shows average monthly rainfall of Mumbai and Lucknow.

Months Lucknow Mumbai
(inches) (inches)

January 0.6 0.0
February 0.8 0.1
March 0.5 0.1 A rain gauge is tool to measure the amount
of rain that has fallen over a period of time.
April 0.6 0.1
May 1.0 1.8
June 2.8 15.8

July 6.3 23.4
August 6.7 16.8
September 3.9 10.6 (a) Make a bar graph to represent the data of rainfall in Lucknow.
October 0.6 3.3 (b) Make a bar graph to represent the data of rainfall in Mumbai.
November 0.1 0.4 (c) Make a double bar graph to represent the data shown above.

December 0.3 0.1 (d) Make a pie chart to represent the data of rainfall in Mumbai.