Subject Mathematics
1801. The total age of A, B and C is 90 years. Ten years ago the ratio of their ages was 1:2:3 What is the present age of B?
(a) 40 years
(b) 30 years
(c) 20 years
(d) 18 years
(e) None of these
Ans. b
1802. Kamal went to a shop and bought things worth TK 25, out of which 30 paisa went on sales tax on taxable purchases. If the tax rate was 6%, then what was the cost of the tax free items?
(a) TK 15
(b) TK 15.70
(c) TK 19.70
(d) TK 20
(e) None of these
Ans. c
1803. The salaries of A, B, and C are in the ratio of 1:2:3. The salaries of B and C together is Tk. 6,000. By what percentage is the salary of C more than that of A?
(a) 100%
(b) 200%
(c) 300%
(d) 600%
(e) None of these
Ans. b
1804. If a carton containing a dozen mirrors is dropped. Which of the following cannot be the ratio of broken mirrors to unbroken mirrors?
(a) 2:1
(b) 3:1
(c) 3:2
(d) 7:5
(e) None of these
Ans. c
1805. On dividing a number by 5. We get 3 as remainder. What will the remainder when the square of this number is divided by 5?
(a) Zero
(b) 1
(c) 2
(d) 4
(e) None of these
Ans. d
1806. Rohit is 28th from left end of a row of 50 students and Shyam is 28th from right end of the row. How many student are sitting between them?
(a) 4
(b) 5
(c) 2
(d) 3
(e) None of these
Ans. a
1807. A water filter can be filled with 8 jugs of capacity 1.3 liters each. How many are required to fill the same filter, if capacity of the jug is 0.8 liters?
(a) 15
(b) 12
(c) 8
(d) 13
(e) None of these
Ans. d
1808. A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. What is the number?
(a) 145
(b) 253
(c) 370
(d) 352
(e) None of these
Ans. b
1809. 1 4 of Ram’s money is equal to 1 6 of Shyam’s money. If both together have TK.600 the difference between their amounts is -
(a) 50
(b) 120
(c) 240
(d) 360
(e) None of these
Ans. c
1810. In a garden, there are 10 rows and 12 columns of mango trees. The distance between two trees is 2 meters and a distance of one meter is left from all sides of the boundary of the garden. What is the length of the garden?
(a) 20 m
(b) 22 m
(c) 24 m
(d) 26 m
(e) None of these
Ans. c
1811. In a certain country a person is born every 7 seconds and a person dies every 13 seconds. Therefore, the birth and death rates account for a population growth rate of one person every -
(a) 4.5 seconds
(b) 6 seconds
(c) 15.17 seconds
(d) 20 seconds
(e) None of these
Ans. c
1812. A time–study specialist has set the production rate for each worker on a certain job at 22 units every 3 hours. At this rate what is the minimum number of workers that should be put on the job if at least 90 units are to be produced per hour?
(a) 12
(b) 13
(c) 18
(d) 30
(e) None of these
Ans. b
1813. Each boy contributed money to the number of girls and each girl contributed money equal to the number of boys in a class of 60 students. If the total contribution thus collected is TK. 1,600, how many boys are there in the class?
(a) 30
(b) 25
(c) 50
(d) 20.5
(e) None of these
Ans. e
1814. 4 __ 7 ___ 8 ___ 4 = 26
(a) +, -, ×
(b) ×, -, +
(c) ×, +, -
(d) +, ÷, ×
(e) None of these
Ans. b
1815. The number of students in each section of a school is 24. After admitting new students, three new sections were started. Now, the total number of sections is 16 and there are 21 students in each section. The number of new students admitted is -
(a) 24
(b) 14
(c) 48
(d) 114
(e) None of these
Ans. a
1816. The smallest 5-digit number exactly divisible by 41 is:
(a) 10041
(b) 10004
(c) 10045
(d) 10025
Ans. b
1817. The product of two number is 4107. If the H.C.F. of these number is 37, then the greater number is:
(a) 101
(b) 107
(c) 111
(d) 185
Ans. c
1818. 617 + 6.017 + 0.617 + 6.0017 = ?
(a) 2963
(b) 62.965
(c) 629.6357
(d) None of these
Ans. c
1819. A 70 cm long wire is to be cut into two pieces such that one piece will be 2 5 as long as the other. How many centimeters will the shorter place be?
(a) 10
(b) 14
(c) 20
(d) 28
Ans. c
1820. The square root of 64009 is:
(a) 253
(b) 347
(c) 363
(d) 803
Ans. a
1821. The average of six number is x and the average of three of these is y. If the average of the remaining three is z, then:
(a) x = y + z
(b) 2x = y + z
(c) x = 2y -2z
(d) None of these
Ans. b
1822. If a number is decreased by 4 and divided by 6, the results is 8. What would be the result if 2 is subtracted from the number and then it is divided by 5?
(a) 9 2 3
(b) 10
(c) 10 1 5
(d) 11 1 5
Ans. b
1823. The ratio of the father’s age to his son’s age is 7 : 3. The product of their ages is 756. The ratio of their ages after 6 years will be:
(a) 5 : 2
(b) 2 : 1
(c) 11 : 7
(d) 13 : 9
Ans. b
1824. (1000) 7 ÷ 10 18 = ?
(a) 10
(b) 100
(c) 1000
(d) 10000
Ans. c
1825. If 15% of 40 is greater than 25% of a number by 2, then the number is:
(a) 12
(b) 16
(c) 24
(d) 32
Ans. b