10 Important Math MCQs for most of the competitive exams
Que 1: The HCF of two numbers is 48 and their LCM is 1440. If one of the numbers is 288, then the other number is.
(A) 96
(B) 240
(C) 192
(D) 144
Correct Ans: B
Que 2: A mixture of oil and water contains 35% oil by weight, 25g of water is added to 100g of such a mixture. What percentage of oil by weight is there in the new mixture ?
(A) 25%
(B) 28%
(C) 30%
(D) 15%
Correct Ans: B
Que 3: A shopkeeper buys a watch for Rs 400. He marks 25% more on the watch, than the cost price. He allows 12% discount at the marked price. What is the percentage of profit?
(A) 10%
(B) 11%
(C) 13%
(D) 15%
Correct Ans: A
Que 4: A shopkeeper has 100 kg of tea. He sells a part of it at 20% profit and the rest at 5% loss. If his overall profit is 10%, find the quantity of tea, which he sold at 5% loss.
(A) 20 kg
(B) 40 kg
(C) 30 kg
(D) 25 kg
Correct Ans: B
Que 5: Compound interest (compounded annually) on a certain sum of money for 2 yr at 4% per annum is Rs. 102. The simple interest on the same sum for the same rate and for the same period will be
(A) 99 rs
(B) 98 rs
(C) 100 rs
(D) 101 rs
Correct Ans: D
Que 6: The base of conical tent is 19.2 m in diameter and the height of its vertex is 2.8 m. the area (in sq m) of canvas required to put such a tent (take π = 22/7) is nearly
(A) 3170
(B) 301.7
(C) 3.170
(D) 317.0
Correct Ans: B
Que 7: Amount income of A and B are in the ratio 4 : 3 and their annual expenses in the ratio 3 : 2. If each saves Rs 60000 at the end of the year, the annual income of A is
(A) Rs 120000
(B) Rs 360000
(C) Rs 240000
(D) Rs 150000
Correct Ans: C
Que 8: A trader sells two articles at Rs 6000 each. He makes a profit of 20% in the sale of the first article and a loss of 20% in the sale of the second articles, what is his net gain or loss per cent?
(A) 5% gain
(B) 4% loss
(C) 5% loss
(D) 4% gain
Correct Ans: B
Que 9: If Ram got 35% marks and failed by 15 marks and Mohan got 40% and scored 35 more than the pass marks, what is the percentage necessary for passing ?
(A) 40%
(B) 38%
(C) 33%
(D) 35%
Correct Ans: D
Que 10: In an election involving two candidates, 68 votes were declared invailed. The winning candidates score 52% and win by 98 votes. The total number of votes polled is
(A) 2518
(B) 2400
(C) 2520
(D) 2478
Correct Ans: A
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