Question

It's given that the mean of 5 no.s is 27 if one of the no.s is excluded the mean gets reduced by 2 find the excluded no.

Answer 1

the excluded number will be 4

Answer 2

Answer:

Step-by-step explanation:

Mean : The sum of quantities divided by the number of quantities is known as the mean. It is also known as an average.

Also, Mean = Sum of quantities/ Number of quantities

Given, the mean of 5 numbers is 27.

Then, the sum of the 5 numbers will be 27*5

Therefore, the sum is 135.

Now, given if one number is excluded the mean gets reduced by 2 ,i.e., the mean becomes 25 and the number of quantities becomes 4.

Now, to find the total of these 4 numbers we will have to multiply 25 by 4.

Therefore, the sum of these 4 numbers is 100.

Now, to find the excluded number we will subtract the sum of the 4 numbers from the sum of the 5 numbers to get the excluded number ,i.e.,

135 - 100 = 35

Therefore, the excluded number is 35.

Hope it Helps!