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# Download Sindh Board Class 5 to 8 Mathematics mcqs for iba sukkur PST JEST teaching jobs

## IBA Sukkur will conduct PST JEST MCQs tests for teaching jobs announced by Education and literacy department Sindh. The official syllabus for PST JEST tests is already uploaded with all Sindh textbook board jamshoro PDF books from class 1 to matric.

#### MATHEMATICS CLASS-7

MATHEMATICS

Class 7th

رياضي

Unit No: 1

SETS

► Sets: "a collection of well-defined distinct objects".

Descriptive form: One way to specify a set is to give a verbal description of its

elements.

Examples: (Set of first ten odd integers.) (Set of vowels of English alphabets.)

Tabular form: Members of a set are written within braces and are separated by

commas.

Examples: A = {1,3,5,7,9, 11, 13, 15, 17, 19). B={a, c, i, o, u}

Set Builder form: Set-builder notation is a mathematical notation for describing a

set by enumerating its elements or starting the properties that its members must

satisfy.

Example: A= {x|x is odd number and is less than 20)

B = (xxis vowel of English alphabets)

{3, 4, 5, 6,...) = {X ENIX > 2) its read as "the set of all x's in natural number,

such that x is greater than 2".

> Union of two or more sets: If A and B are any two sets, then the union of set A and

Set B consists of all elements in set A or in set B and is denoted by AUB.

Example: If A= {1,2,3), B=(3,4,5) find AUB.

AUB= {1, 2, 3, 4, 5)

325

The intersection of two or more sets: If A and B are any two sets, then the intersection

of set A and set B consists of all those elements which are common to both A and B.

and it is denoted by ANB.

Example: If A=(1, 2, 3. 4), B-.(3,4,5} find ANB.

ANB- (3, 4)

J

> Difference of two sets: If A and B are two sets then their difference consists of all

those elements of set A which are not in set B and it is denoted by A-Bor A/B.

Example: IfA= {2,3,4,5,6), B=(5, 6, 7, 8) find A-Bor A/B =?

A-B or A/B= {2,3,4,5,6) - {5, 6, 7, 8)= 12,3,4}

-

Disjoint set: Two sets A and B are disjoint sets if they do not have any common

clementine. ANB==

Example: A = {4, 5) and B = (6, 7, 8), find ANB=?

ANB = {4,5} n {6, 7, 8) = {}

Treasure of Knowledge

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MATHEMATICS CLASS-8
Rs. 160 maintains a family of persons
for 80 days, for how long will ks 210
maintain a family of 12 persons,
a) 70 days
b) 50 days
c) 100 days

IF 10 men can do a piece of work in 12
days, working 7 hours a day, how
many hours a day must six men work
to do the same work in 14 days.
a) 10 hours
b) 12 hours
14 hours
d) 16 hours
18 similar machines working on
electric for averagely 18 hours cost
electric charges amounting to Rs.2700
per month. Find monthly electric
charge if such 27 machines work for 20
hours averagely per day.
4500
b) 4800
e) 150
d) 170

40 men can build a wall4 m high in 15

days. How many men will build a

similar wall 5 m high in 6 days?

a) 165 men

b) 125 men

c) 85 men

d) 150 men

### Q: What is Median?

Median: The median is the middle value of (ascending or descending) data, il
the number of values is odd. Then the middle value will be the median.

Solution: Ascending order 1.4.4,5,5.7.7.7.8
MATHEMATICS CLASS-8
value is even, then the mean of two Michelle values will be the mean of the data.

Example No 1: Calculate the median of the data given below
65.55, 89, 56, 35, 14, 56, 55, 87,45.92
Solution: First arrange this data in ascending order 14, 35, 45, 55, 555, 56, 65, 87, 89, 92
(5(1)
= 6 So the sixth number (56) is median.

Example No 2: Calculate the median for the data given below:
63, 55, 89, 56, 35, 14, 56, 55, 87,45
Solution: First arrange this data in ascending order 14, 35, 45, 55, 55, 56, 56, 65, 87, 89
&2
Median
= 55.5
2

### Q: What is the mode?

Mode The mode is the most frequently occurring values in data,

Example: The following are the Maths marks of the Aftab in the month of
December 2013. Find the mode of the marks 45, 41, 85, 90, 41, 66, 95, 41
Solution: First arrange this data in ascending order 41, 41, 41, 45, 66, 85,95
So the most frequent value is 41, so the mode of the number is 41.
MCQs
Range of the data 4, 8, 9, 3, 10 is.
4
Mean of 50, 0, 30, 12
b) 7
a) 20
e) 8
b) 21
d) 10
c) 22