Basic Maths and Reasoning MCQs (page 137 of 212)
Percentages, ratios, averages, profit and loss, speed and time, number series and simple logical reasoning, with the working shown for every answer.
4,221 questions. Select an option to check your answer, or open "Show answer". Showing 2721–2740.
- 2721.
Each exterior angle of a regular polygon with 6 sides measures:
Show answer
Answer: B. 60°
Exterior angles add up to 360°, so each is 360° ÷ 6 = 60°.
- 2722.
Each interior angle of a regular polygon with 6 sides measures:
Show answer
Answer: B. 120°
Interior angle = 180° − exterior angle = 180° − 60° = 120°.
- 2723.
Each exterior angle of a regular polygon with 8 sides measures:
Show answer
Answer: B. 45°
Exterior angles add up to 360°, so each is 360° ÷ 8 = 45°.
- 2724.
Each interior angle of a regular polygon with 8 sides measures:
Show answer
Answer: D. 135°
Interior angle = 180° − exterior angle = 180° − 45° = 135°.
- 2725.
Each exterior angle of a regular polygon with 9 sides measures:
Show answer
Answer: B. 40°
Exterior angles add up to 360°, so each is 360° ÷ 9 = 40°.
- 2726.
Each interior angle of a regular polygon with 9 sides measures:
Show answer
Answer: B. 140°
Interior angle = 180° − exterior angle = 180° − 40° = 140°.
- 2727.
Each exterior angle of a regular polygon with 10 sides measures:
Show answer
Answer: B. 36°
Exterior angles add up to 360°, so each is 360° ÷ 10 = 36°.
- 2728.
Each interior angle of a regular polygon with 10 sides measures:
Show answer
Answer: B. 144°
Interior angle = 180° − exterior angle = 180° − 36° = 144°.
- 2729.
Each exterior angle of a regular polygon with 12 sides measures:
Show answer
Answer: A. 30°
Exterior angles add up to 360°, so each is 360° ÷ 12 = 30°.
- 2730.
Each interior angle of a regular polygon with 12 sides measures:
Show answer
Answer: B. 150°
Interior angle = 180° − exterior angle = 180° − 30° = 150°.
- 2731.
Each exterior angle of a regular polygon with 15 sides measures:
Show answer
Answer: B. 24°
Exterior angles add up to 360°, so each is 360° ÷ 15 = 24°.
- 2732.
Each interior angle of a regular polygon with 15 sides measures:
Show answer
Answer: C. 156°
Interior angle = 180° − exterior angle = 180° − 24° = 156°.
- 2733.
Each interior angle of a regular polygon with 18 sides measures:
Show answer
Answer: C. 160°
Interior angle = 180° − exterior angle = 180° − 20° = 160°.
- 2734.
Each exterior angle of a regular polygon with 20 sides measures:
Show answer
Answer: C. 18°
Exterior angles add up to 360°, so each is 360° ÷ 20 = 18°.
- 2735.
Each exterior angle of a regular polygon with 24 sides measures:
Show answer
Answer: A. 15°
Exterior angles add up to 360°, so each is 360° ÷ 24 = 15°.
- 2736.
Each interior angle of a regular polygon with 24 sides measures:
Show answer
Answer: C. 165°
Interior angle = 180° − exterior angle = 180° − 15° = 165°.
- 2737.
Each interior angle of a regular polygon with 30 sides measures:
Show answer
Answer: C. 168°
Interior angle = 180° − exterior angle = 180° − 12° = 168°.
- 2738.
Each exterior angle of a regular polygon with 36 sides measures:
Show answer
Answer: A. 10°
Exterior angles add up to 360°, so each is 360° ÷ 36 = 10°.
- 2739.
Each interior angle of a regular polygon with 36 sides measures:
Show answer
Answer: C. 170°
Interior angle = 180° − exterior angle = 180° − 10° = 170°.
- 2740.
What comes next in the series 32, 35, 38, 41, 44, ...?
Show answer
Answer: B. 47
Each term increases by 3: 44 + 3 = 47.