Question

Find the sum of this sequence . 1+2+3+....+40
(Solve with points)

Answer 1

Answer:

820

Step-by-step explanation:

first if it is even add first number and last 40+1 = 41

now divide the last number by 2 = 40/2 = 20

now 41 * 20= 820

mark as brainlest

Answer 2

46 seconds s the answer