Class-10th CBSE
Subject-Mathematics Set 3
year-2016
Here is some questions:-
Section A
1. Find the 9th term from the end (towards the first term) of the A.P. 5, 9, 13, ....., 185.
Section B
1. How many terms of the A.P. 65, 60, 55, .... be taken so that their sum is zero?
Section C
1. If the sum of first 7 terms of an A.P. is 49 and that of its first 17 terms is 289, find the sum of first n terms of the A.P.
Section D
1. The sum of three numbers in A.P. is 12 and sum of their cubes is 288. Find the numbers.
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