the mean of 3 number is 12. two numbers are 9 and 14 what is the third number?
Share
the mean of 3 number is 12. two numbers are 9 and 14 what is the third number?
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
We know Average = sum of numbers/no. of numbers
Sum of numbers = average × no. of numbers
Sum of three numbers = 12 × 3 = 36
Sum of first two numbers = 15 + 10 = 25
The third number = sum of three numbers - sum of two numbers
Third number = 36 - 25 = 11
Thus, the third number is 11
Answer the third number is 11
Answer:
13 is the third number.
Step-by-step explanation:
Mean= sum of observations / number of observations
= 9+14+x / 3 = 12
= 23+x / 3=12
=23+x=12*3
=23+x=36
x=36-23
x=13
Hopefully it will help.......