10 Important Math MCQs for most of the competitive exams
Que 1: A train runs for 20 min at the speed of 75 km/h, in the next 25 min at the speed of 60 km/h and the last 15 min at the rate of 40 km/h, find out the average speed of the train .
(A) 65 km/h
(B) 60 km/h
(C) 58 km/h
(D) 55 km/h
Correct Ans: B
Que 2: A money-lender finds that due to a fall in the annual rate of interest 8% to 7¾% his yearly income diminishes by Rs. 61.50 his capital is
(A) Rs 22400
(B) Rs 25000
(C) Rs 24600
(D) Rs 22600
Correct Ans: C
Que 3: A merchant has 1000 kg of sugar, part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. The quantity (in kg) sold at 18% profit is
(A) 560
(B) 600
(C) 640
(D) 440
Correct Ans: B
Que 4: A man can do a piece of work in 5 day, but with the help of his son, he can do it in 3 days. In what time can the son do it alone ?
(A) 7 days
(B) 8 days
(C) 7½ days
(D) 8½ days
Correct Ans: C
Que 5: Value of 1/0 is?
(A) 0
(B) 1
(C) finite
(D) Infinite
Correct Ans: D
Que 6: The ratio of 50 cm and 4 m is:
(A) 1:8
(B) 2:7
(C) 1:9
(D) 3:8
Correct Ans: A
Que 7: If p : q = 3 : 4 and q : r = 8 : 9 then p : r is
(A) 1:3
(B) 3:2
(C) 2:3
(D) 1:2
Correct Ans: C
Que 8: The sum of three consecutive natural numbers each divisible by 3 is 72. What is the largest among them?
(A) 21
(B) 24
(C) 27
(D) 30
Correct Ans: C
Que 9: Rani bought a piece of cloth for Rs. 950 and spent Rs. 300 on designing it. At what price should she sell it to make 30% profit?
(A) 1650 rs
(B) 1550 rs
(C) 1150 rs
(D) 1625 rs
Correct Ans: D
Que 10: A The interest earned on Rs. 15000 in three years at simple interest is Rs. 5400. Find the rate per cent per annum.
(A) 11.3%
(B) 12.5%
(C) 12%
(D) 14%
Correct Ans: C
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