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अर्कज
Subject: Maths
, asked on 25/4/18
Solve this:
Question No. 9
In a society, 70 families have television sets and 40 have radio sets. What is the total number of families in the society if no family has both television and radio sets?
A. 70
B. 110
C. 150
D. 160
Answer
3
अर्कज
Subject: Maths
, asked on 25/4/18
Solve this:
Answer
2
अर्कज
Subject: Maths
, asked on 25/4/18
Example 3 iv
Answer
1
अर्कज
Subject: Maths
, asked on 25/4/18
Example 5
Answer
1
Dipesh Kumar Karesia
Subject: Maths
, asked on 23/4/18
Plz provide me the list of all the formulas that can be used for solving problems in chapter 1 " SETS" ??
Answer
1
अर्कज ..
Subject: Maths
, asked on 23/4/18
Solve this:
Answer
1
अर्कज ..
Subject: Maths
, asked on 23/4/18
Ex 3
Answer
1
अर्कज ..
Subject: Maths
, asked on 23/4/18
If A and B are two empty sets , then x belongs to B is satisfied because there is no element x in either A or B to which the condition may be applied. Thus, A = B . Hence , there is only one empty set and we denote it by phi . Therefore , the article 'the' is used before empty set . Explain the lines .
Answer
1
अर्कज ..
Subject: Maths
, asked on 23/4/18
Example 3
Answer
1
अर्कज ..
Subject: Maths
, asked on 23/4/18
Example 2
Answer
1
अर्कज ..
Subject: Maths
, asked on 22/4/18
Solve this:
Question No. 10
In a class of 50 students, 28 students study mathematics and 35 study science. If a student studies at least one subject, then how many students study both mathematics and science?
A) 19
B) 17
C) 15
D) 13
Answer
3
अर्कज ..
Subject: Maths
, asked on 22/4/18
Solve this :
$\mathrm{Q}.\mathrm{Considering}\mathrm{the}\mathrm{set}\mathrm{U}=\{\mathrm{p}:\mathrm{p}=\mathrm{n},\mathrm{n}\in \mathrm{N},\mathrm{n}\le 10\}\mathrm{as}\mathrm{the}\mathrm{universal}\mathrm{set},\mathrm{the}\mathrm{three}\mathrm{sets}\mathrm{A},\mathrm{B},\mathrm{and}\mathrm{C}\mathrm{are}\mathrm{defined}\mathrm{as}:\phantom{\rule{0ex}{0ex}}\mathrm{A}=\{\mathrm{x}:\mathrm{x}=3\mathrm{n}-1,\mathrm{n}\in \mathrm{N}\mathrm{and}\mathrm{n}\le 3\}\phantom{\rule{0ex}{0ex}}\mathrm{B}=\{\mathrm{y}:\mathrm{y}={\mathrm{n}}^{2},\mathrm{n}\in \mathrm{N}\mathrm{and}{\mathrm{n}}^{3}30\}\phantom{\rule{0ex}{0ex}}\mathrm{C}=\{\mathrm{z}:\mathrm{z}=2\mathrm{n},\mathrm{n}\in \mathrm{N},\mathrm{and}\mathrm{n}5\}\phantom{\rule{0ex}{0ex}}\mathrm{Which}\mathrm{of}\mathrm{the}\mathrm{following}\mathrm{sets}\mathrm{is}\mathrm{equal}\mathrm{to}\mathrm{the}\mathrm{set}\mathrm{A}\cup \left[\mathrm{C}\text{'}-\left(\mathrm{A}\text{'}\cup \mathrm{B}\right)\right]\text{'}?$
$\mathit{1}\mathit{.}\mathit{}A\phantom{\rule{0ex}{0ex}}\mathit{2}\mathit{.}\mathit{}U\phantom{\rule{0ex}{0ex}}\mathit{3}\mathit{.}\mathit{}\mathit{(}A\mathit{\cup}B\mathit{)}\mathit{\text{'}}\phantom{\rule{0ex}{0ex}}\mathit{4}\mathit{.}\mathit{}\mathit{(}A\mathit{\cup}B\mathit{\cup}C\mathit{)}\phantom{\rule{0ex}{0ex}}$
Answer
1
अर्कज ..
Subject: Maths
, asked on 22/4/18
Solve this:
Question No. 7
If A and B be two sets having 5 and 7 elements respectively, then find the minimum and maximum number of elements in A U B.
A) 2, 12
B) 3, 12
C) 5, 12
D) 7, 12
Answer
1
अर्कज ..
Subject: Maths
, asked on 22/4/18
Solve this:
Question No. 5
In a society of 1250 families, 500 read news paper X, 300 read newspaper Y and 150 read both the newspapers. What is the number of families that read neither newspaper?
A) 600
B) 550
C) 500
D) 450
Answer
1
अर्कज ..
Subject: Maths
, asked on 22/4/18
Solve this:
Question No. 4
In a survey, out of 750 students of a college, 475 read newspaper H and 525 read newspaper T. What is the least number of students who read both the newspapers?
A) 225
B) 250
C) 275
D) 300
Answer
1
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Question No. 9

In a society, 70 families have television sets and 40 have radio sets. What is the total number of families in the society if no family has both television and radio sets?

A. 70

B. 110

C. 150

D. 160

Question No. 10

In a class of 50 students, 28 students study mathematics and 35 study science. If a student studies at least one subject, then how many students study both mathematics and science?

A) 19

B) 17

C) 15

D) 13

Solve this :$\mathrm{Q}.\mathrm{Considering}\mathrm{the}\mathrm{set}\mathrm{U}=\{\mathrm{p}:\mathrm{p}=\mathrm{n},\mathrm{n}\in \mathrm{N},\mathrm{n}\le 10\}\mathrm{as}\mathrm{the}\mathrm{universal}\mathrm{set},\mathrm{the}\mathrm{three}\mathrm{sets}\mathrm{A},\mathrm{B},\mathrm{and}\mathrm{C}\mathrm{are}\mathrm{defined}\mathrm{as}:\phantom{\rule{0ex}{0ex}}\mathrm{A}=\{\mathrm{x}:\mathrm{x}=3\mathrm{n}-1,\mathrm{n}\in \mathrm{N}\mathrm{and}\mathrm{n}\le 3\}\phantom{\rule{0ex}{0ex}}\mathrm{B}=\{\mathrm{y}:\mathrm{y}={\mathrm{n}}^{2},\mathrm{n}\in \mathrm{N}\mathrm{and}{\mathrm{n}}^{3}30\}\phantom{\rule{0ex}{0ex}}\mathrm{C}=\{\mathrm{z}:\mathrm{z}=2\mathrm{n},\mathrm{n}\in \mathrm{N},\mathrm{and}\mathrm{n}5\}\phantom{\rule{0ex}{0ex}}\mathrm{Which}\mathrm{of}\mathrm{the}\mathrm{following}\mathrm{sets}\mathrm{is}\mathrm{equal}\mathrm{to}\mathrm{the}\mathrm{set}\mathrm{A}\cup \left[\mathrm{C}\text{'}-\left(\mathrm{A}\text{'}\cup \mathrm{B}\right)\right]\text{'}?$

$\mathit{1}\mathit{.}\mathit{}A\phantom{\rule{0ex}{0ex}}\mathit{2}\mathit{.}\mathit{}U\phantom{\rule{0ex}{0ex}}\mathit{3}\mathit{.}\mathit{}\mathit{(}A\mathit{\cup}B\mathit{)}\mathit{\text{'}}\phantom{\rule{0ex}{0ex}}\mathit{4}\mathit{.}\mathit{}\mathit{(}A\mathit{\cup}B\mathit{\cup}C\mathit{)}\phantom{\rule{0ex}{0ex}}$

Question No. 7

If A and B be two sets having 5 and 7 elements respectively, then find the minimum and maximum number of elements in A U B.

A) 2, 12

B) 3, 12

C) 5, 12

D) 7, 12

Question No. 5

In a society of 1250 families, 500 read news paper X, 300 read newspaper Y and 150 read both the newspapers. What is the number of families that read neither newspaper?

A) 600

B) 550

C) 500

D) 450

Question No. 4

In a survey, out of 750 students of a college, 475 read newspaper H and 525 read newspaper T. What is the least number of students who read both the newspapers?

A) 225

B) 250

C) 275

D) 300