Subject Mathematics
1926. How many prime number are less than 50?
(a) 14
(b) 15
(c) 16
(d) 18
Ans. b
1927. If x = y a , y = z b and z = x c , then find the value of abc.
(a) 1
(b) 2
(c) 3
(d) None of these
Ans. a
1928. Two numbers are in the ratio 1 : 2. If 7 is added to both, their ratio changes to 3 : 5. The greatest number is:
(a) 24
(b) 26
(c) 28
(d) 32
Ans. c
1929. The simple interest on a certain sum of money 2 1 2 years at 12% per annum is Tk. 40 less than the simple interest on the same sum for 3 1 2 years at 10%
(a) Tk. 700
(b) Tk. 800
(c) Tk. 900
(d) None of these
Ans. b
1930. The sum of two numbers is 28 25 of the first number. The second number is what percent of the first?
(a) 12%
(b) 14%
(c) 16%
(d) 18%
Ans. a
1931. A water tank is two-fifth full. A can fill a tank in 10 minutes and pipe B can empty it in 6 minutes. If both the pipes are open, how long will it take to empty or fill the thank completely.
(a) 6 min. to empty
(b) 6 min to fill
(c) 9 min. to empty
(d) 9 min. to fill
Ans. a
1932. A train 240 m long passed a pole in 24 seconds. How long will it take to pass a platform 650 m long?
(a) 65 sec
(b) 89 sec
(c) 100 sec
(d) 150 sec
Ans. b
1933. The H.C.F. of two number is 11 and their L.C.M is 693. If one of the number is 77, fine the other.
(a) 99
(b) 89
(c) 79
(d) 69
Ans. a
1934. Find the compound interest on Tk. 15,625 for 9 months at 16% per annum compounded quarterly.
(a) Tk. 1851
(b) Tk. 1941
(c) Tk. 1951
(d) Tk. 1961
Ans. a
1935. What is the smallest number to be subtracted from 549162 in order to make it a perfect square?
(a) 28
(b) 36
(c) 62
(d) 81
Ans. d
1936. The sale price of an article including the sales tax is Tk. 616. The rate of sales tax is 10%. If the shopkeeper has made a profit of 12%, then the cost price of the article is:
(a) Tk. 500
(b) Tk. 515
(c) Tk. 550
(d) Tk. 600
Ans. a
1937. A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
(a) 3.6
(b) 7.2
(c) 8.4
(d) 10
Ans. b
1938. The difference between the length and breadth of rectangle is 23 m, then the area is:
(a) 1520 m²
(b) 2420m²
(c) 2480 m²
(d) 2520 m²
Ans. d
1939. The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
(a) 0
(b) 1
(c) 10
(d) 19
Ans. d
1940. How many days are there in x weeks x days?
(a) 7x²
(b) 8x
(c) 14x
(d) 7
Ans. b
1941. If a and b are odd numbers, then which of the following is even?
(a) a + b
(b) a + b + 1
(c) ab
(d) ab + 2
Ans. a
1942. The greatest number that exactly divides 105, 1001 and 2436 is:
(a) 3
(b) 11
(c) 7
(d) 21
Ans. c
1943. 0.213 ÷ 0.00213 = ?
(a) 1
(b) 10
(c) 100
(d) None of these
Ans. c
1944. Two-fifth of one-fourth of three-seventh of a number is 15. What is half of that number?
(a) 94
(b) 96
(c) 188
(d) None of these
Ans. d
1945. A sum of Tk. 312 was divided among 100 boys and girls in such a way that each boys gets Tk. 3.60 and each girl Tk. 2.40. The number of girls is:
(a) 35
(b) 40
(c) 60
(d) 65
Ans. b
1946. The least perfect square number divisible by 3, 4, 5, 6 and 8 is:
(a) 900
(b) 1200
(c) 2500
(d) 3600
Ans. b
1947. The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. What is the average of the remaining two numbers?
(a) 4.5
(b) 4.6
(c) 4.7
(d) 4.8
Ans. b
1948. Find a number such that when 15 is subtract from 7 times the number, the ruselt is 10 more than twice the number.
(a) 5
(b) 7
(c) 9
(d) 15
Ans. a
1949. 54 is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780. The bigger part is:
(a) 24
(b) 34
(c) 40
(d) 32
Ans. b
1950. The sum of the ages of 5 children born at the intervals of 3 years is 50 years. What is the age of the youngest child?
(a) 4 years
(b) 8 years
(c) 10 years
(d) None of these
Ans. a