Question

If A is a proper subset of B, then the cardinal number of A is always ____ to the cardinal number of B.

• A. less than
• B. equal to
• C. more than
• D. none of these

Answer 1

The correct option is A less than

The subsets of a set other than itself are called proper subsets, The proper subsets of a set always have less number of elements than the set itself has.

Hence, A will be correct answer.