Q. 65.0( 1 Vote )

i. If U = {x : 0

i. U = {x : 0 ≤ x ≤ 10, x }

U contains all the whole numbers that are greater than or equal to zero and less than or equal to 10.

U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

A = {x : x is a multiple of 3}

Multiples of 3 present in U are : 3, 6, 9 [U Universal set]

A = {3, 6, 9}

A’ = {0, 1, 2, 4, 5, 7, 8, 10} [element that are present in U but not in A]

ii. U is the set of natural numbers.

A’ is the set of all composite numbers.

(A’)’ = A

A contains all the elements that are present in U but not in A’.

A contains all the natural numbers that are not composite numbers.

A is the set of all prime numbers and 1.

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