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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 8 - Mathematics
4.31 Cardinal Number of a Set

Cardinal number of the set:
The number of elements in a set is called the cardinal number of the set.

Example:
A = {1,2,3,4,5,6}
The cardinal number of the set A is 6 and is denoted by n(A) = 6.


Directions: Find the cardinal number of the sets. Also write at least five examples of your own.
Q 1: A = {John, Peter, Matt}.
n(A) = 21
n(A) = 5
n(A) = 3
n(A) = 8

Q 2: A = {1,2,3,4,5}.
n(A) = 4
n(A) = 3
n(A) = 5
n(A) = 2

Q 3: A = {3,4,5,6,7,8}.
n(A) = 6
n(A) = 5
n(A) = 8
n(A) = 4

Q 4: X = {6,12,18,24,30}.
n(X) = 5
n(X) = 6
n(X) = 30
n(X) = 18

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