# What will be the Fourth Number? If

Answered

The average of 6 observations is 45.5. If one new observation is added to the previous observations, then the new average becomes 47. The new observation is:

- 58
- 56
- 50
- 46

Best answer

**Answer: (2) 56**

**Explanation:-**

The average of 6 observations = 45.5

Then, the sum of 6 observations = 45.5 x 6

= 273

One new observation added,

Then, the new average = 47

The sum of 7 observation = 7 x 47

= 329

The new observation = 329 – 273

= 56

Hence, the answer is (2) 56.