Question

Find the common difference of the following Arithmetic sequence. 1) 5,9,13. 2) 25,21,17,. 3) 7,7.3,7.6 4) 8.6,9,9.4 5) 1⅓,3⅔,4,.?​

Answer 1

Answer:

1) 4

2) -4

3) 0.3

4) 0. 4

Step-by-step explanation:

We just have to minus a1 from a2 and then a2 from a3 and then we have get common difference of AP series.

(We have to match the values we got by subtracting the given a1 from a2 and a2 from a3 . If they match it means it forms an AP but I think there is some problem in part 5. It doesn't form an AP serie)

Answer 2

Answer:

1) 5,9,13.. A. P.

d = t2-t1 = 9-5 = 4

d = 4

2) 25,21,17... A. P.

d = t2-t1 = 21-25 = -4

d = -4

3) 7,7.3,7.6 ... A. P.

d = t2-t1 = 7.3-7.0 = 0.3

d = 0.3

4) 8.6,9,9.4 ... A. P.

d = 9.0-8.6 = 0.4

d = 0.4

5) 1⅓,3⅔,4,.. A. P.

d = 11/3 - 4/3

= 7/3

= 2 ¹/3.

d = 2 ¹/3.