Determine the cardinal number for the given set. {2, 4, 6, 8, 10, . . . , 16}

Question

Determine the cardinal number for the given set. {2, 4, 6, 8, 10, . . . , 16}

Answer 1

The cardinality of a finite set is a natural number: the number of elements in the set.

 

Example:  The cardinal number of the set A = {2, 3, 5, 7, 9} is 5. 

 

The problem gives the set:

    {2, 4, 6, 8, 10, . . . , 16}

The ellipsis (the "...") can be filled in to make the set:

    {2, 4, 6, 8, 10, 12, 14, 16}             [note: although there may be other possibilities]

 

So, count the number of elements in that set.