Insert two arithmetic means between 11 and 26.
A) 15, 22
B) 17, 21
C) 16, 21
D) 16, 20

Question

Quizplus · Accepted Answer

To find the two arithmetic means between 11 and 26, we need to first find the common difference between the terms, which is (26-11)/3 = 5. We can then add this common difference to the first term (11) to get the first arithmetic mean, and add the common difference again to get the second arithmetic mean. Therefore, the sequence becomes 11, 16, 21, 26, and the two arithmetic means are 16 and 21. Choice C matches this solution.

Insert Two Arithmetic Means Between 11 and 26