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NCERT Class 11 Mathematics Solutions: Chapter 1 โ Sets Exercise 1.4 Part 1
1. Find the union of each of the following pairs of sets:
(i)
(ii)
(iii) is a natural number and multiple of is a natural number less than
(iv) is a natural number and is a natural number and
(v)
Answer:
(i)
(ii)
(iii) is a natural number and multiple of
is a natural number less than
(iv) is a natural number and
is a natural number and
(v)
2. Let . Is ? What is ?
Answer:
Here,
Yes, .
3. If are two sets such that , then what is ?
Answer: If are two sets such that , then .
4. If ; find
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
Answer: Given sets are:
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)