Here Important Math MCQ questions are added which are frequently asked in almost all the examinations. You can check the correct answer of any question on clicking the show answer button or on option itself. The Correct answer will be displayed below. You can share any question with your friends on whatsapp by tapping whatsapp button.
31) A correct clock shows 9 o'clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 3 o'clock in the afternoon?
(A) 144°
(B) 150°
(C) 160°
(D) 180°
Correct Answer - Option
(D)
Explanation:
Hour hand traverses 30° per hour.
For 6 hours, 6 x 30 = 180°
32) What is the angle between the hands of the clock at 3:40?
(A) 240°
(B) 110°
(C) 130°
(D) 190°
Correct Answer - Option
(C)
Explanation:
At 3 o’ clock, the hour hand is at 90 degrees from the vertical. In 40 minutes,
Hour hand = 90 + 40*(0.5) = 90 + 20 = 110 (The hour hand moves at 0.5 dpm)
Minute hand = 40*(6) = 240 (The minute hand moves at 6 dpm)
Difference or angle between the hands = 240 – 110 = 130 degrees.
36) A person bought some articles at the rate of 5 per rupee and the same number at the rate of 4 per rupee. He mixed both the types and sold at the rate of 9 for 2 rupees. In this business he suffered a loss of 3. The total number of articles bought by him was ?
37) A shopkeeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of the cost price and the printed price of the book is ?
38) An item costing 840 was sold by a shopkeeper at a gain of10% and it was again sold by the new buyer at a loss of 5%. Final selling price of the item is ?
