Question

Form a sequence that has two arithmetic means between 13 and 88.

a.
13, 38, 63, 88
c.
13, 25, 25, 88
b.
13, 88, 163, 238
d.
13, 50.5, 88


Please select the best answer from the choices provided

a) A
b) B
c) C
d) D

Answer 1

a.

13, 38, 63, 88

Explanation:

Answer 2

Correct choice is A

Explanation:

For the numbers 13 and 88, find the difference 88-13:

since 88-13=75 and
`(75)/(3)=25` (two arithmetic means tells you there will be three intervals), two arithmetic means will be

• 13+25=38;
• 38+25=63.

The only correct sequence is 13, 38, 63, 88.