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NDA 2018
Exam
NDA
Year
2018
Subject
Mathematics
Chapter
Statistics

NDA 2018 · Mathematics · Statistics

In a test in Mathematics, 20 \% of the students obtained "first...

In a test in Mathematics, 20%20 \% of the students obtained "first class". If the data are represented by a Pie-Chart, what is the central angle corresponding to "first class"?

Options

  1. A20∘20^{{}^{\circ}}
  2. B36∘36^{{}^{\circ}}
  3. C72∘72^{{}^{\circ}}
  4. D144∘144^{{}^{\circ}}

Correct answer

C. 72∘72^{{}^{\circ}}

Step-by-step solution

Central angle =20%=20 \% of 360∘=20×360∘100=72∘360^{{}^{\circ}}=\frac{20 \times 360^{{}^{\circ}}}{100}=72^{{}^{\circ}}
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