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Definition of Sets

μ represents ...

Question

$μ$ represents the set of students in class $8$ and $n (μ) = 35$ .
A is the set of students in the class $8$ who have to wear spectacles and $n (A) = 18$ .
Find $n (A^{'})$ .

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Solution

$n (A^{1}) = n (u) - n (A)$
$= 35 - 18 = 17$

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Similar questions

μ

represents the set of students in class VIII and

n (μ) = 35

A

is the set of students in the class VIII who have to wear spectacles and

n (A) = 18

State the value of

n (A^{'})

.

μ

represents the set of students in class VIII and

n (μ) = 35

A

is the set of students in the class VIII who have to wear spectacles and

n (A) = 18

. Draw a Venn diagram to represent the sets

μ

A

A^{'}

U

represents the set of students in class

8

n (U) = 35

. A is the set of students in the class

8

who have to wear spectacles and

n (A) = 18

State the value of

n (A^{'})

Q. Do the following activity -
Activity I : Total number of students in your class, n(S) =

x

Number of students from your class, wearing spectacles, n(A) =

x

Probability of a randomly selected student wearing spectacles, P(A) =

x

Probability of a randomly selected student not wearing spectacles, P(B) =

x

Activity II : Decide the sample space yourself and fill in the following boxes.

Q. In the Venn diagram, the universal set,

ξ =

{students in class

8

=

{students who passed mathematics} and set N = {students who passed English}.
It is given that

n (M) = 50, n (N) = 60

n (M

\cap

N) = 12

2

students failed both
subjects, find the total number of students who sat for the examination

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