Question

SEQUENCES AND SERIES 185
EXERCISE 9.2
Find the sum of odd integers from 1 to 2001.
Find the sum of all natural numbers lying between 1 Cu o sve).....
multiples of 5.
In an A.P., the first term is 2 and the sum of the first five terms is one-fourth of
the next five terms. Show that 20th term is -1'.
How many terms of the A.P. -6,
11
--5,
2
are needed to give the sum-25?
1
In an A.P., if ph term is
1
and qh term is
prove that the sum of first pq
9
р​

Answer 1

Answer:

answer of this above question is 9