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Odd numbers between 10 and 18 are 11, 13, 15, 17 so these all terms will be a part of the required set i.e., {11, 13, 15, 17}
From the sets given below, select equal sets:
A = { 2, 4, 8, 12}
B = {1, 2, 3, 4}
C = {4, 8, 12, 14}
D = {3, 1, 4, 2}
(a) The collection of all months of a year is a welldefined collection of objects because one can definitely identify a month that belongs to this collection. Hence, this collection is a set.
(b) A collection of novels is not a welldefined collection because one cannot identify a book that belongs to this collection. Hence, this collection is not a set.
(c) A collection of top rich persons can not be defined. Hence, this collection is not a set.
(d) The collection of the ten most talented writers of India is not a welldefined collection because the criteria for determining a writer's talent may vary from person to person. Hence, this collection is not a set.
As y ∈ N, y can be 1, 2, 3, 4...
∴ x will be 1, 1/2, 1/3, 1/4...
⇒ 1 ∈ Q
If A = {3, 6, 9, 12} and B = {6, 8, 9} then intersection of A and B is:
Since none of the odd number is divisible by 2, so it would be a null set.
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