When does equality hold in the chain QM ≥ AM ≥ GM ≥ HM for positive xi?

When does equality hold in the chain QM ≥ AM ≥ GM ≥ HM for positive xi?

A When exactly two of the xi are equal

B When the xi are in arithmetic progression

C When a single xi equals the average of the others

D When all xi are equal

Solution

Correct Answer: Option D