Subject Mathematics
1776. When the diameter of a circle is trebled, the are is multiplied by how many times?
(a) 3
(b) 6
(c) 9
(d) 12
Ans. c
1777. Which of the following the 250% of 1?
(a) 0.25
(b) 2.5
(c) 25
(d) 0.025
Ans. b
1778. If f(x) = x² + 1 x - 1 - 1, then which of the following is correct?
(a) f(0) = ∞
(b) f(1) = -1
(c) f(1) = 0
(d) f(-1) = -1
Ans.
1779. What is the difference of largest and smallest prime number between 60 and 80?
(a) 8
(b) 12
(c) 18
(d) 140
Ans. c
1780. A student loses 1 mark for every wrong answer and scores 2 marks for every correct answer. If the answers all the 60 questions in an exam and scores 39 marks. How many of them were correct?
(a) 33
(b) 31
(c) 27
(d) 37
Ans. a
1781. Find the value of [2 – 3 × (2 - 3) -1 ] -1
(a) - 1 5
(b) 1 5
(c) -5
(d) 5
Ans. b
1782. The ratio of the angles of a triangle is 2 : 3 : 4. What is the largest angle in degrees?
(a) 90
(b) 80
(c) 60
(d) 30
Ans. b
1783. In a survey, 30% of the people surveyed owned a personal computer and 77% owned a cellular telephone. If 25% owned both cellular telephone and a personal computer, then percentage of the people who does not have either of the instrument?
(a) 20%
(b) 25%
(c) 30%
(d) 40%
Ans. a
1784. A student first reduced a number by 20 percent and then increased it again by 20 percent. If the difference between the two new numbers was 8, then what is the original number?
(a) 100
(b) 75
(c) 50
(d) 40
Ans. c
1785. Which one of the following is equal to 1 4 of 0.01 percent?
(a) 0.0025
(b) 0.025
(c) 0.00025
(d) 0.000025
Ans. c
1786. Novera bought a ticket to a cricket match for Tk. 25 and late sold the ticket to Nahid for Tk. 75. What was the percent increase in the price of the ticket?
(a) 200%
(b) 100%
(c) 50%
(d) 300%
Ans. a
1787. In a university, 80 percent of the students lived in hostel, and 60 percent of the hostel students are lucky to get a single room. If number of lucky students id 1,200 then how many students were there in the university?
(a) 2500
(b) 2400
(c) 2000
(d) 1800
Ans. a
1788. A train which is 1 km long traveling at a speed of 60 km/hour enters a tunnel 1 km of length. What time does the train take to come fully out of the tunnel?
(a) 2 min
(b) 1 min
(c) 60 min
(d) 30 min
Ans. a
1789. In a mixture of 60 liters, the ratio of milk and water is 2 : 1. What amount of water must be added to make the ratio of milk and water as 1 : 2?
(a) 75 liters
(b) 80 liters
(c) 55 liters
(d) 60 liters
Ans. d
1790. A truck driver must complete a 180 mile trip in 4 hours. If his average speed is 50 miles per hour for the first 30 hours, then how fast must he travel for the final hour?
(a) 35
(b) 53
(c) 30
(d) 40
Ans. c
1791. Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottle could 10 such machines produce in 4 minutes?
(a) 108000
(b) 2700
(c) 1800
(d) 648
Ans. c
1792. In the figure ABCD is a square. If the length of the square is 10 ft, then what will be the area of the triangle OCD?
Layer 1 A B C D
(a) 12.5 sft
(b) 25 sft
(c) 37.22 sft
(d) cannot be determined
Ans. b
1793. The average of 13 numbers is 68. If the average of the first 7 numbers is 63 and that of the last 7 numbers is 70, find the 7th number?
(a) 49
(b) 56
(c) 10
(d) 47
Ans. d
1794. If Tk. 4,500 was invested in a share when the price per share was Tk. 9 and Tk. 3,000 was invested in another share when the price per share was Tk. 10. What was the price per share was Tk. 10. What was the average price per share purchased?
(a) Tk. 9.20
(b) Tk. 9.375
(c) Tk. 9.4
(d) Tk. 9.625
Ans. b
1795. Son’s age is now one-third of father’s age. In twelve years from now son’s age will be one half of the father’s age. What is the son’s age in years now?
(a) 24
(b) 12
(c) 10
(d) 6
Ans. b
1796. Two numbers A and B are such that the sum of 5% of A and 4% of is two-third of the sun of 6% of A and 8% B. What is the ratio of A and B?
(a) 1:1
(b) 2:3
(c) 2:5
(d) 4:3
(e) None of these
Ans. d
1797. a, b, c, d, e, f are five consecutive odd numbers, their average is-
(a) 5(a+4)
(b) abcde 5
(c) 5(a+b+c+d+e)
(d) a+b+c+f
(e) None of these
Ans. e
1798. A school has 10 classes with the same number of student in each class. One day, the weather was bad and many student were 3 4 full and 2 classes were 1 6 empty. A total of 74 student were absent. What is the total number of student in this school?
(a) 200
(b) 220
(c) 240
(d) 400
(e) None of these
Ans. c
1799. In a shop, the cost of 5 shirts, 5 pairs of trousers and 3 hats is TK.710. The cost of 11 shirts, 11 pairs of trousers and 8 hats is Tk. 1,590. What is the total cost of 1 shirt, 1 pair of trouser and 1 hat?
(a) TK. 130
(b) TK. 150
(c) TK. 180
(d) TK. 200
(e) None of these
Ans. b
1800. If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance travelled by him is -
(a) 50 km
(b) 56 km
(c) 70 km
(d) 80
(e) None of these
Ans. a