# What is the Third Number?

The average of five positive number is 213. The average of the first two Number is 233.5 and the average of the last two number is 271.

What is the third number?

- 64
- 56
- 106
- Cannot be determined

**Answer: (40) cannot be determined
Explanation:-
**The average of five positive numbers = 213

Therefore, the sum of five positive numbers = 213 x 5 = 1065

The average of first two positive numbers = 233.5

Therefore, the sum of first two positive numbers = 233.5 x 2 = 467

The average of last two numbers = 271

Therefore, the sum of last two numbers = 271 x 2 = 542

Third number = 1065 – (476 + 542)

= 1065 – 1018

= 47

Hence, the third number is 47.