Which of the following lists of numbers form an A.P.? If they form an A.P., find the common difference d and write the next three terms :
(i) 4, 10, 16, 22,…
(ii) -2, 2, -2, 2,…..
(iii) 2, 4, 8, 16,….
(iv) 2, 
, 3, 
,……
(v) -10, -6, -2, 2,….
(vi) 1², 3², 5², 7²,….
(vii) 1, 3, 9, 27,….
(viii) √2, √8, √18, √32,….
(ix) 3, 3 + √2, 3 + √2, 3 + 3√2,…..
(x) √3, √6, √9, √12,……
(xi) a, 2a, 3a, 4a,…….
(xii) a, 2a + 1, 3a + 2, 4a + 3,….
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.