State which of the given collections are set:
(i) Collection of all poor people of Dhanbad.
(ii) Collection of all difficult problems in your maths book.
(iii) Collection of all fools.
(iv) Collection of all countries of Asia.
(v) Collection of four countries of Asia.
(vi) Collection of three cities of India whose name start with the letter ‘J’.
(vii) Collection of all people in this world over 50 year of age.
Solution:
If A = (3, 5, 7, 9, 11}, then write which of the following statements are true. If a statement is not true, mention why.
(i) 3 ϵ A
(ii) 5, 9 ϵ A
(iii) 8 ∉ A
(iv) 7 ∉ A
(v) {3} ϵ A
(vi) {5, 9} ϵ A
Solution:
More Solutions:
- Find the equivalent fraction
- Replace ‘…..’ in each of the following by the correct number.
- Reduce the following fractions to simplest form:
- Replace ‘……’ by an appropriate sign” between given fractions:
- Replace ‘…..’ by an appropriate sign ‘<, = or >’ between the given fractions:
- Compare the following pairs of fractions:
- Arrange the given fractions in descending order:
- Arrange the given fractions in the ascending order:
- Work out the following :
- Find in the missing fractions:
- Work out the following: L.C.M
- Simplify the following: L.C.M
- What number should be added to