Algebra

Arithmetic Progressions

Arithmetic Mean

         

What is the arithmetic mean of 3a+15 3a +15 and 7a9 7a -9 ?

8,x,16,18 8, x, 16, 18

If the average of the above numbers is 13, what is xx ?

What is the arithmetic mean of all the prime numbers less than 20?

What is the arithmetic mean of all the leap years in the 19th19^{\text{th}} century?

Details and Assumptions:
A year that is divisible by 4 is a leap year. However, a year that is divisible by 100 but not by 400 is a common year.

The 19th19^{\text{th}} begins with January 1, 1801 and ends with December 31, 1900.

10,6,2,2,6,10 -10, -6, -2, 2, 6, 10 What is the arithmetic mean of the above sequence?

×

Problem Loading...

Note Loading...

Set Loading...