Question

Determine which of the following are arithmetic

1/4, 3/4, 5/4 , 7/4 , 9/4 ,
80, 70 , 60 ,50 ,40
100, 50, 25 , 12.5
1,2,4,8,16
2/3, 4/3, 8/3 16/3, 32/3
5,10,15,20,25

Answer 1

Explanation:

If you take any number in the sequence then subtract it by the previous one, and the result is always the same or constant then it is an arithmetic sequence. The constant difference in all pairs of consecutive or successive numbers in a sequence is called the common difference, denoted by the letter d.