Question

If U = $\{x:x=n^2,n\in N,n\le 5\}$, then the subset A = {even numbers} is

• A. If a set is said to be finite, then number of elements in that set is always a natural number.
• B. A set which does not contain any element is called the empty set.
• C. A set which is empty or consists of a definite number of elements is called finite set ,otherwise, the set is called infinite set.
• D. Set of drops in an ocean is an infinite set

Answer 1

The correct option is C

A set which is empty or consists of a definite number of elements is called finite set ,otherwise, the set is called infinite set.

U = $\{x:x=n^2,n\in N,n\le 5\}$,

U = {1, 4, 9,16, 25}

A = {even numbers}

A = {4, 16}