Question

the arithmetic mean of five numbers is 16 if one more no ' is add to the collection the mean of six number become 21 find sixth number

Answer 1

Answer:

Step-by-step explanation:

Let the sum of all the observations be x.

Mean = Sum of all the observations/

Total number of observations

16 = x1/5

x1 = 16*5

x1 = 80

21 = x2/6

x2 = 21*6

x2 = 126

Sixth number = x2-x1

= 126-80

= 46