Q. If the mean of $n$ items is $\overline{x}$ and the sum of any $(n - 1)$ number is $R$, then the value of left item is
A) $n + \overline{x}$
B) $n\overline{x} - R$
C) $\overline{x} + Rn$
D) $n\overline{x} - nR$
Explanation
The correct answer is Option B: $n\overline{x} - R$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.