What was the average number of candidates appeared from zone $T$ over all the years together ?
(a)810
(b)815
(c)825
(d)805
(e)820
Answer
Answer (as printed): D
Explanation
Average number of candidates appeared from $T$ all over the years $$\begin{aligned} & =\frac{(6.2+6.2+6.4+7.8+9.9+11.8) \times 100}{6} \\ & =\frac{(48.3 \times 100)}{6}=\frac{4830}{6}=805 . \end{aligned}$$
Explanation as extracted from the printed page; notation may be imperfect.