10 Important Math MCQs for most of the competitive examinations
Que 1: On selling a pen for Rs 18, a man losses 1/10 of it's cost price. The cost price of the pen is
(A) rs 16.20
(B) rs 19.80
(C) rs 20
(D) rs 25
Correct Ans: C
Que 2: Toffees are bought at the rate of 3 for a rupee. to gain 50% they must be sold at
(A) 2 for a rupee
(B) 1 for a rupee
(C) 4 for a rupee
(D) None of the above
Correct Ans: A
Que 3: Anil purchased a TV set with 20 % discount. Had he got 25% discount, he would have saved rupees 500 more. At what price did he purchased the TV set?
(A) Rs 8000
(B) Rs 12000
(C) Rs 6000
(D) Rs 10000
Correct Ans: D
Que 4: Oranges are bought at 7 for rupees 3. At what rate per hundred must they be sold to gain 33%?
(A) Rs 56
(B) Rs 60
(C) Rs 58
(D) Rs 57
Correct Ans: D
Que 5: A machine is sold at a profit of 10%. Had it been sold for Rs 80 less , there would have been a loss of 10%. then CP of the machine is
(A) Rs 350
(B) Rs 400
(C) Rs 450
(D) Rs 520
Correct Ans: B
Que 6: A bus travels at a speed of 50 km per hour to go from its origin to its destination at a distance of 300 km and travels at a speed of 60 km per hour to return to the origin. What is the average speed of the bus?
(A) 54.55 km/h
(B) 55 km/h
(C) 55.55 km/h
(D) 54 km/h
Correct Ans: A
Que 7: 45% of 750 - 25% of 480 + ? = 480.50
(A) 216
(B) 263
(C) 245
(D) 236.50
Correct Ans: B
Que 8: If the diameter of a sphere is doubled, then the increase in its surface area will be
(A) 100%
(B) 200%
(C) 300%
(D) 400%
Correct Ans: C
Que 9: In an examination, 35% of the students passed and 455 failed. How many students appeared for the examination?
(A) 490
(B) 700
(C) 1300
(D) 845
Correct Ans: B
Que 10: The value of a machine depreciates at the rate of 10% per annum. If its present value is Rs 100000, what will be its value after 2 yrs?
(A) Rs 8000
(B) Rs 10000
(C) Rs 18000
(D) Rs 81000
Correct Ans: D
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