Mathematics MCQs / Q&A

A rectangular lawn of dimensions 80 m * 60 m has two roads each 10 m wide running in the middle of the lawn, one parallel to the length and the other parallel to the breadth. What is the cost of traveling the two roads at Rs.3 per sq m?…

105.126 * 35.201 – 90.23 * 3 + 55.11 * 27.01 = ____________? A. 4890 (Correct) B. 40000 C. 271 D. 5996 Explanation: 105.126 * 35.201 – 90.23 * 3 + 55.11 * 27.01 = 105 * 35 – 90 * 3 +55 * 27 = 3675 – 270 + 1485 = 5160 –…

A group of people has provisions for 29 days for 24 men. If after 4 days 1/6 of them desert then food will last for? A. 25 days B. 28 days C. 30 days (Correct) D. 32 days

A candidate who gets 30% of the marks fails by 50 marks. But another candidate who gets 45% marks gets 25 marks more than necessary for passing. Find the number of marks for passing? A. 150 B. 200 (Correct) C. 250 D. 275

16.66% of 33.33% of 66.66% of ? = 30 A. 90 B. 270 C. 810 (Correct) D. 240 Explanation: 16.66% of 33.33% of 66.66% of x = 30 = 1/6 of 1/3 of 2/3 of x = 30 => (30 * 6 * 3 * 3)/2 => x = 810

A leak in the bottom of a tank can empty the full tank in 6 hours. An inlet pipe fills water at the rate of 4 liters per minute. When the tank is full in inlet is opened and due to the leak the tank is empties in 8 hours. The capacity of…

At what rate of interest will be Rs 20000 becomes Rs 24200 after 2 years when interest is compounded annually? A. 5% B. 6% C. 10% (Correct) D. 15% Explanation: P = Rs 20000, A =Rs 24200, t = 2 years 20000 × (1 + R/100)2 =…

The number of permutations of the letters of the word ‘MESMERISE’ is___________? A. 9!/(2!)2 3! (Correct) B. 9!/(2!)3 3! C. 9!/(2!)2 (3!)2 D. 5!/(2!)2 3! Explanation: n items of which p are alike of one kind, q alike of the…

A rope of which a calf is tied is increased from 12 m to 23 m, how much additional grassy ground shall it graze? A. 1120 m2 B. 1250 m2 C. 1210 m2 (Correct) D. 1200 m2

A man purchases an electric heater whose printed price is 160 if he received two successive discounts of 20% and 10% he paid: A. Rs. 112 B. Rs. 129.60 C. Rs. 119.60 D. Rs. 115.20 (Correct) Explanation: Price after 1st …