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NDA 2017
Exam
NDA
Year
2017
Subject
Mathematics
Chapter
Statistics

NDA 2017 · Mathematics · Statistics

In an examination, 40 \% of candidates got second class. When the...

In an examination, 40%40 \% of candidates got second class. When the data are represented by a pie chart, what is the angle corresponding to second class?

Options

  1. A40∘40^{{}^{\circ}}
  2. B90∘90^{{}^{\circ}}
  3. C144∘144^{{}^{\circ}}
  4. D320∘320^{{}^{\circ}}

Correct answer

C. 144∘144^{{}^{\circ}}

Step-by-step solution

First, convert 40%40 \% into fraction 40%=40100=25 Angle =25×360=144∘\begin{aligned} & 40 \%=\frac{40}{100}=\frac{2}{5} \\ & \text{ Angle }=\frac{2}{5} \times 360=144^{{}^{\circ}} \end{aligned}
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