[45." If the first and last terms of A.P.are "1" an "],[" rms is "36," then the number of terms will be: "]

The first and last term of an A.P. are 1 and 11. If the sum of its terms is 36, then the number of terms will be

The first and last terms of an A.P.are 1 and 11 If the sum off its ter4msis 36 then the number if terms will be 5 b.8 c.6 d.7

The first and last terms of an A.P. are 1 and 7 . If the sum of its terms is 36 , then the number of terms will be

The first and last terms of an A.P. are 1 and 7 . If the sum of its terms is 36 , then the number of terms will be

The first and last terms of an A.P. are 1 and 11. If the sum of its terms is 36, then the number of terms will be (a) 5 (b) 6 (c) 7 (d) 8

The first and last terms of an A.P. are 1 and 11. If the sum of its terms is 36 then the number of terms will be a. 5 b. 8 c. 6 d. 7

The first and last terms of an A.P. are 1 and 11. If the sum of its terms is 36, then the number of terms will be (a) 5 (b) 6 (c) 7 (d) 8

4.If the first and last terms of an A.P.are 1 and 11 respectively and the sum of its terms is 30. find the number of terms in the A.P.

If the first second and last terms of an A.P.are a,b and 2a respectively,then its sum is