SOLUTION: What is the cardinality of 16 18 20 22 ...,50. And. 16,18,20. 22,24...48. 50

Algebra ->  Subset -> SOLUTION: What is the cardinality of 16 18 20 22 ...,50. And. 16,18,20. 22,24...48. 50      Log On


   

Question 990406: What is the cardinality of 16 18 20 22 ...,50. And. 16,18,20. 22,24...48. 50
Answer by ikleyn(52782) About Me  (Show Source):
You can put this solution on YOUR website!
.
1.  The number of elements in the sequence

16, 18, 20, 22, . . . , 50

(arithmetic progression with the first term  16  and the common difference  2)  is

n = %2850-16%29%2F2+%2B+1 = 34%2F2+%2B+1 = 17%2B1 = 18

(cardinality).


2. And I am confused with yours second sequence.
Is it identical to the first one?