1.
Read the question given below
2.
How many terms are there in A.P. 1 + 5+ 9+……149 ?
3.
Read the question given below
4.
Read the question given below
5.
Read the question given below
6.
Read the question given below
7.
The sum of first n odd natural numbers is
8.
The value of a30-a20 for the A.P. -9,-14,-19 is
9.
Read the question given below