Elective Mathematics

Question 1

1n(A) = 11, n(B) = 16, n(A ∩ B) = 8. How many elements are in A only?

Easy

A. 8 B. 11 C. 3 D. 19

Question 2

2A set with 6 elements has ___ proper subsets.

Medium

Your answer (fill in the blank)

Question 3

3n(U) = 100, n(A) = 12, n(B) = 14 and n(A ∩ B) = 10. How many elements are in neither A nor B?

Medium

A. 90 B. 74 C. 16 D. 84

Question 4

4Two sets with no common element are

Easy

A. disjoint B. universal C. equivalent D. equal

Question 5

5A′ is the

Easy

A. union of A B. complement of A C. subset of A D. power set

Question 6

6A set with 7 elements has ___ subsets.

Easy

Your answer (fill in the blank)

Question 7

7The empty set is written

Easy

A. {∅ } B. U C. {0} D. ∅

Question 8

8A set has 7 elements. How many subsets does it have?

Easy

A. 127 B. 128 C. 49 D. 14

Question 9

9The union of two disjoint sets has n(A) + n(B) elements.

Easy

A. True B. False

Question 10

10n(A) = 28, n(B) = 14, n(A ∩ B) = 6. How many elements are in A only?

Easy

A. 28 B. 22 C. 34 D. 8