Class 9 Practice Set 1.4 Sets Chapter 1| 9th Maths 1 | Std 9 | Algebra New Syllabus |SSC Maharashtra

This Video explains Practice Set 1.4 Class 9 of Chapter 1 Sets of Standard 9 for Geometry Maharashtra State Board.
#Std9 #Maharashtra #SSC #Class9
9th Maths Playlist all topics - • 9th Standard Geometry ...
Practice Set 1.1 Video Link - • Class 9 Practice Set 1...
Practice Set 1.2 Video Link - • Class 9 Practice Set 1...
Practice Set 1.3 Video Link Lecture 1 - • Class 9 Practice Set 1...
Practice Set 1.3 Video Link Lecture 2 - • Class 9 Practice Set 1...
Following questions of Maharashtra State Board Practice Set 1.4 Class 9 of Chapter 1 Sets of Standard 9 have been explained in the video:
Question 1.
If n(A) = 15, n(A ∪ B) = 29, n(A ∩ B) = 7, then n(B) = ?
Question 2.
In a hostel there are 125 students, out of which 80 drink tea, 60 drink coffee and 20 drink tea and coffee both. Find the number of students who do not drink tea or coffee.
Question 3.
In a competitive exam 50 students passed in English, 60 students passed in Mathematics and 40 students passed in both the subjects. None of them failed in both the subjects. Find the number of students who passed at least in one of the subjects ?
Question 4.
A survey was conducted to know the hobby of 220 students of class IX. Out of which 130 students informed about their hobby as ’rock climbing and 180 students informed about their hobby as sky watching. There are 110 students who follow both the hobbies. Then how many students do not have any of the two hobbies? How many of them follow the hobby of rock climbing only? How many students follow the hobby of sky watching only?
Question 5.
Observe the given Venn diagram and write the following sets.
i. A
ii. B
iii. A ∪ B
iv. U
v. A’
vi. B’
vii. (A ∪B )’

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