For the following A.P.s, write the first term a and the common difference d:
(i) 3, 1, -1, – 3, …..
(ii) 
(iii) -3.2, -3, -2.8, -2.6, …
Solution:
Write first four terms of the A.P., when the first term a and the common difference d are given as follows:
(i) a = 10, d = 10
(ii) a = -2, d = 0
(iii) a = 4, d = -3
(iv) a = 
, d = 
Solution:
More Solutions:
- Check whether -150 is a term of the A.P. 11, 8, 5, 2, …
- Find the 20th term from the last term of the A.P. 3, 8, 13, …, 253.
- Find the sum of the two middle most terms of the A.P.
- Determine the A.P. whose third term is 16 and the 7th term.
- Find the 31st term of an A.P. whose 11th term is 38 and 6th term is 73.
- The 15th term of an A.P. is 3 more than twice its 7th term.