CLASS_11_MATHS_SOLUTIONS_NCERT

Class XI Chapter 1 – Sets Maths
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(iii) x : xis a positive multipleof 3 ' x : x
N and xis not a multipleof 3
x : xis a prime number ' x : xis a positivecomposite number and x 1
(iv)
(v)
x : xis a natural number divisible by3and 5 ' x : xis a natural number that is not divisible by3or 5
(vi)
x : xis a perfect square ' x : x N and xis not a perfect square
(vii) x : xis a perfect cube ' x : x N and xis not a perfect cube
x : x 5 8 ' x : x N and x 3
(viii)
(ix)
x : 2x 5 9 ' x : x N and x 2
x : x 7 ' x : x N and x 7
(x)
x : x N and 2x 1 10 ' x : x N and x 9 / 2
(xi)
Question 4:
If
U
1, 2,3, 4,5,6,7,8,9 , A2, 4,6,8
A B A B
(i) ' ' '
Solution 4:
U
A
1,2,3,4,5,6,7,8,9
2,4,6,8 , B
2,3,5,7
A B ' 2,3,4,5,6,7,8 ' 1,9
(i)
A' B' 1,3,5,7,9 1, 4,6,8,9 1,9
A B' A' B '
A B ' 2 ' 1,3,4,5,6,7,8,9
and
B
2,3,5,7
A B A B
(ii) ' ' '
(ii)
A' B' 1,3,5,7,9 1,4,6,8,9 1,3,4,5,6,7,8,9
A B' A' B '
. Verify that
Question 5:
Draw appropriate Venn diagram for each of the following:
(i) A
B'
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