Question

What is the average of first 222 odd numbers?
PLS FAST

Answer 1

Answer:

222

Step-by-step explanation:

the answer is attached above

Answer 2

Answer:

Average is the mean of observations.

To find average, we have to find the sum of observations.

Explanation:

Sum = n/2 [2a +(n-1)d]

number of terms n = 222

First term a = 1

common difference d = 2

$\frac{222}{2} (2(1) + (222 - 1)2) \\ 111(2 + 221 \times 2) \\ = 111(2 + 442) \\ = 111 \times 444$

sum of 222 odd numbers= 49284

average = sum of observations/ total observations

average = 49284/222

average = 222