[" Therk whether the sequence-3,-1,1,3,......is an AP."],[" if it is an A.P.,find the common difference."]

Solve the following questions. (i) Check whether the sequence -3, -1,1,3 ,…. Is an A.P. If it is an A.P., find the common difference. (ii) If the 7th term of an A.P. is 40, then find S_(13) .

Solve the following questions. (i) Check whether the sequence -3, -1,1,3 ,…. Is an A.P. If it is an A.P., find the common difference. (ii) If the 7th term of an A.P. is 40, then find S_(13) .

Check whether the sequence 7,12, 17, 22,……….. Is an A.P., find the common difference.

Check whether the sequence 7,12, 17, 22,……….. Is an A.P., find the common difference.

Show that the sequence defined by T_n = 4n + 7 is an A.P. Also, find its common difference.

Find out which of the following sequences are A.P. for those which are A.P., find out the common difference. ,- 1/3, 1/6, 1/9, 1/12 , …..

Find out which of the following sequences are A.P. for those which are A.P., find out the common difference. ,- a + b, (a + 1) + b, (a + 1) + (b + 1), (a+ 2) + (b + 1), (a + 2) + {b + 2), ....

Find out which of the following sequences are A.P. for those which are A.P., find out the common difference. ,- 0 2,4,8,16....

Find out which of the following sequences are A.P. for those which are A.P., find out the common difference. ,- - 225, - 425,- 625,- 825,...

Find out which of the following sequences are A.P. for those which are A.P., find out the common difference. ,- 0,-5,-10,-15, …..