nth term, sum of n terms, applications.
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Q1 · Arithmetic Progressions · HARD
If the sum of first n terms of an A.P. is 3n² + 5n, then which term of the A.P. is 164?
Q2 · Arithmetic Progressions · MEDIUM
How many terms of the A.P. 9, 17, 25, ... must be taken to give a sum of 636?
Q3 · Arithmetic Progressions · EASY
The 10th term of the A.P. 2, 7, 12, 17, ... is: