Solutions of Important Questions on AP Arithmetic Progression Class X Maths SA 2 CBSE CCE Part 2

Solutions of Important Questions on AP Arithmetic Progression Class X Maths SA 2 CBSE CCE Part 1

Question 58
In this question, we can start with the old style also like 
put n =1 then we get S1 which is a1
then put n = 2 which S2 means a1 + a2 then put a1 from above to get a2.
Now you have an A.P. then you can find a25 or whatever asked !!!
Short cut METHOD see below : 

Question 61 Proving Question :

Question 63

These questions are from AVTE assignments for Class Tenth SA 2. 

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