CLASS_11_MATHS_SOLUTIONS_NCERT

Class XI Chapter 1 – Sets Maths
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Exercise 1.5
Question 1:
Let U
(i)
(ii)
A'
B '
(iii) '
1,2,3;4,5,6,7,8,9 , A 1,2,3,4 , B 2,4,6,8
A
C
A
B
(iv) '
A' '
(v)
B
C
(vi) '
Solution 1:
U
A
B
C
(i)
(ii)
(iii)
1, 2,3, 4,5,6,7,8,9
1,2,3,4
2, 4,6,8
3, 4,5,6
A' 5,6,7,8,9
B ' 1,3,5,7,9
AC
1, 2,3, 4,5,6
A C' 7,8,9
(iv)
A
B
1, 2,3, 4,6,8
AB
' 5,7,9
A' ' A
1,2,3,4
(v)
(vi)
BC
2,8
B C ' 1,3,4,5,6,7,9
and
C
3, 4,5,6
. Find
Question 2:
If U a b c d e f g h
(i) A a, b,
c
(ii) B d, e, f , g
, , , , , , , , find the complements of the following sets:
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