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The number of sides of a regular polygon whose interior angles are each 150° is:

This question was previously asked in
NTPC CBT 2 2016 Previous Paper 3 (Held On: 17 Jan 2017 Shift 3)
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  1. 15
  2. 13
  3. 12
  4. 14

Answer (Detailed Solution Below)

Option 3 : 12
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Detailed Solution

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Each interior angle is 150

Exterior angle = 180 - 150 = 30

We know,

Exterior angle = 360°/Number of sides

⇒ Number of sides = 360°/Exterior angle = 360/30 = 12

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