# Four quantities are such that their arithmetic mean (A.M) is the same as the A.M.

Four quantities are such that their arithmetic mean (A.M) is the same as the A.M. of the first three quantities. The fourth quantity is

(a) Sum of the first three quantities

(b) A.M. of the first three quantities

(c) (Sum of the first three quantities)/4

(d) (Sum of the first three quantities)/2

**Answer: (b) A. M. of the first three quantities **