Question

1 - 2 + 3 - 4..........200 terms. What is the average

Answer 1

Answer:

-1/2

Step-by-step explanation:

1 - 2 + 3 - 4..........200 terms. What is the average

1 -2 + 3 - 4 ................................200 term

1 - 2 + 3 - 4 + ..............................+ 199 - 200

If we take terms in pairs

(1 - 2) + (3 - 4)  +..............................+ (199 - 200)

Each Pair will give -1

1-2 = -1

3 - 4 = -1

199 - 200 = -1

there will be 100 Pair for 200 mumbers

=> Sum = -100

Average = -100/200  = -1/2