Question

Insert 3 arithmetic means between 10 and -10 (INSERT SOLUTION) ​

Answer 1

• 5, 0, -5

Explanation:

Numbers in sequence are:

• 10, a, b, c, -10

The difference between end points:

• -10 - 10 = -20

Common difference of 5 terms:

• -20 / (5 - 1) = - 5

The missing numbers are:

• a = 10 - 5 = 5
• b = 5 - 5 = 0
• c = 0 - 5 = -5