**Question 01**

**The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is**

**Given**:

Average = 27

No. of data = 5

If one no. excluded then average = 25

Let the number to be excluded be x

Now, average = sum of all data/ no. of data

27 = sum/ 5

Sum = 27 x 5

According to given condition, 25 = (sum – x)/ 4

Sum – x = 25 x 4

27 x 5 – x = 25 x 4

135 – x = 100

x = 135 – 100

x = 35

** Ans. Excluded number is 35.**