Question

a)Find the sum of first 30 odd numbers.

b) Using this calculate 3 + 9 + 15 + 21 + · · · 177

c) How many odd numbers from 1 in the order makes the sum 2500?

d) Find the sum 5 + 15 + 25 + 35 · · · 155​

Answer 1

Answer:

(a) 900

(b) ____

(c)____

(d)_____