Question

Find the sum of 10 terms of an AP.
50, 46, 42, ....
2 Find the sum of 100 terms of an AP.
2, 4, 6, ..., 200.
Find the sum of first 25 terms of an AP whose nth
term is 1 - 4n.
If sum of first 6 terms of an AP is 36 and that of the
first 16 terms is 256, then find the sum of first
10 terms.
NCERT Exempl
Find the number of terms of the AP 64,60,56,..., so
that their sum is 544.​

Answer 1

Answer:

I have done 1st and second that you asked