জব প্রিপারেশন

20001 Math

A person rides a bicycle round a circular path of radius 50 m. The radious of the wheel of the bicycle is 50 cm. The cycle comes to the starting point for the first time in 1 hour. what is the number of revolutions of the revolutions of the wheel in 15 minutes?

A)20

B)25

C)30

D)35

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20002 Math

In covering a certain distance , the speeds of A and B are in the ratio of 3 : 4. A takes 30 minutes more than B to reach the destination. The time taken by A to reach the destination is :

A)1.0 hour

B)1.5 hours

C)2.0 hours

D)2.5 hours

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20003 Math

Two lots of onions with equal quantity, one costing Tk. 10 per kg and the other costing Tk. 15 per kg are mixed together and whole lot is sold at Tk. 15 per kg . What is the profit or loss?

A)10% loss

B)10 % profit

C)20% loss

D)20% profit

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20004 Math

A and B are partners in a business A contributes 1/4 of the capital for 15 months and B receives 2.3 of the profit . Find for how long B's money was used.

A)6 months

B)8 months

C)10 months

D)12 months

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20005 Math

If 6 men and 8 boys can do a piece of work in 10 days and 26 men and 48 boys can do the same in 2 days , the time taken by 15 men and 20 boys to do the same type of work will be

A)4 days

B)5 days

C)6 days

D)7 days

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20006 Math

Pipe A alone can fill a tankin 8 hours .Pipe B can fill it in 6 hours . If both the pipes are operated and after 2 hours pipe A is closed, then the other pipe will fill the tank in.

A)6 hours

B)3 1/2 hours

C)4 hours

D)1 1/2 hours

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20007 Math

A train of length 150 m takes 10 seconds to cross another train 100 m long coming from the opposite direction . If the speed of first train is 30 km / hr, what is the speed of second train?

A)48km /hr

B)54 km / hr

C)60 km / hr

D)72 km / hr

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20008 Math

In an acute angled traingle ABC ,if sin 2 (A + B - C) =1 and tan ( B + C-A)= , then the value of angle B is

A)52%

B)60=0%

C)30%

D)67%

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20009 Math

Consider the following recursive function fun (s , y). what is the value of fun ( 4, 3) int fun ( int x , int y) if ( x =0) return y; return fun ( x,1, x+y); |

A)9

B)10

C)12

D)13

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20010 Math

The average Number of key comparisons done in a successful sequential search in a list of length it is :

A)log n

B)(n + 1)/2

C)(n -1) /2

D)n /2

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20011 Math

A, B and enter into partneship with investments in the ratio of 5 :7:8 If, at the end of the year A's share of profit is Tk. 42360, how much is the total profit ?

A)Tk. 169,440

B)Tk. 183,000

C)Tk. 196,700

D)Tk. 168,440

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20012 Math

Alam sold two vehicles for Tk. 46000 each . If he gained 10% on the first and lost 10% on another , then what is his percentage profit or loss in this transaction?

A)2% loss

B)1% profit

C)1% loss

D)None of these

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20013 Math

A square is inscribed in a circle of diameter 2a and another square is circumscribing circle. The difference between the areas of outer and inner squares is:

A)

B)

C)

D)

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20014 Math

12 marbles are selected at random form a large collection of white , red, green and yellow marbles . The number of marbles of each color is unlimited. Find the probability that the selection contains at least one marble of each color ?

A)

B)

C)

D)

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20015 Math

a motor -cycle covers 40 Km with a speed of 20 km /hr. Find the speed of the motor -cycle for the next 40 km journey so that the average speed of the whole journey will be 30 km / hr.

A)70.0km /hr

B)52.5km /hr

C)60.0km/hr

D)60. 5 km / hr

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20016 Math

A man can row 6 km / hr in still water. It the speed of the current is 2 km / hr , it takes 3 hrs more in upstream than in the downstream for the same distance . The distance is

A)30 km

B)24 km

C)20 km

D)32 km

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20017 Math

The respective ratio between the speed of a car , a train , and a bus is 5 : 9 : 4 . The average speed of the car, bus and train is 72 km / hr together . what is the average speed of the car and the train together?

A)82 km /hr

B)72 km / hr

C)67 kms /er

D)84 km / hr

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20018 Math

Three angles of a triangle are in proportion 5: 6: 7. Then what is the difference in degrees between he biggest and the smallest angles?

A)

B)

C)

D)

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20019 Math

A water tank has two taps ( Tap-1 and Tap-2) : Tap-1 can fill a tank in 8 hours and Tap-2 can empty the tank in 16 hours . How long will they take to fill the tank if both taps are opened simultaneously but Tap -2 is closed after 8 hours?

A)10

B)12

C)14

D)16

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20020 Math

The average of the three numbers x , y and z is 45 , x is greater than the average of y and z by 9. The average of y and z is greater than y by 2 .Then the difference of x and z is:

A)3

B)5

C)7

D)11

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20021 Math

A can finish a work in 5 days and B takes 4 days to do the same work . If the work is increased by 8 times, how many days will it take for both of them to finish the work if they work together?

A)20 days

B)15 days

C)10 days

D)25 days

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20022 Math

A short distance athlete has taken 60 sec to cover 100m. If he makes 30 steps in 9, sec how many steps has he taken in that time?

A)130

B)170

C)173

D)None

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20023 Math

A manufacturer sells three products i.e A, B C. Product A costs 200 and sells for 250, product 150 and sells for 180, Product C cost 100 and sells for 110. On which product, he has maximum percentage of profit?

A)B only

B)A and B both

C)A only

D)C only

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20024 Math

A trader marked the price of a article 30% above the cost price and gave the buyes 10& discount on market price, thereby gaining Tk. 340. The cost of the article is?

A)3000

B)2000

C)1900

D)1800

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20025 Math

A short distance athelte has taken 60 sec to cover 100m. If he makes 30 steps in 9 sec,how many steps has he takenin that time?

A)130

B)170

C)173

D)None

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20026 Math

A car goes 15 km on a gallon of octane when it is driven at 50 km/h. When the car is driven at 60 km/h, it only goes 80% as far. How many gallons of octane are needed to travel 200 km if half the distance is traveled at 50 km/h and the rest 60 km/h?

A)15

B)16.67

C)10.6

D)14

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20027 Math

A manufacturer sells three products i.e A, B and C. Product A costs 200 and sells for 250, Product b costs 150 and sells for 180, product C costs 100 and sells for 110. On which product, he has maximum percentage of profit?

A)B only

B)A and both

C)A only

D)C only

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20028 Math

One third of the faculty members of a department are female. Sixteen of the male teaches unmarried while 60% of them are married. The total member of faculty members in the department is____

A)72

B)60

C)30

D)90

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20029 Math

A wholesaler sells goods a retailer at a profit of 20%. The retailer sells to the customer, who pays 80% more than of the wholesaler. What is the retailers profit?

A)40%

B)50%

C)60%

D)70%

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20030 Math

If an integer y is subtracted from an integer x, and the results than x, than y must be___

A)equal to x

B)less than 0

C)less than x

D)greater than 0

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20031 Math

A train went 300 km city X to City at an average speed of 10 km/h. At what speed did it travel on the way back if its average speed for the whole trip was 120 km/h?

A)120 km/h

B)125 km/h

C)130/h

D)150 km/h

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20032 Math

If a, b and c are 3 conscutive integers and a> b> c, which of the following has the maximum value?

A)

B)

C)

D)

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20033 Math

Sam can mow a lawn in 20 min, while mark takes 10 min longer to longer to mow the same lawn. How long will they take to mow the lawn if they work together?

A)12 min

B)14 min

C)15 min

D)more than 15 min

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20034 Math

f the length of each of the sides of three squeare garden's plots us increases by 50 percents, by what percent is the sum of the areas of the three plots increased?

A)125%

B)150%

C)200%

D)375%

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20035 Math

If Tk. 5,000 is invested at 12% annual rate of interest, how much will the investment be worth after 2 years?

A)5785

B)6272

C)7190

D)8225

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20036 Math

Find the simplified value of : ( 6 + 2x ) (4-2x).

A)24 + 12x -4x

B)24 + 20x -4x

C)24 -4x -

D)24 + 4x -4x

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20037 Math

If 62 =34 + 4x. what is x ?

A)x =16

B)x = -16

C)x =7

D)x =5

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20038 Math

Find the value of

A)

B)

C)

D)

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20039 Math

If an investor gets Tk. 19500 as interest after 5 years on his savings of Tk. 13,000. what is the rate of interest ?

A)8%

B)5%

C)10%

D)30%

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20040 Math

A person saves Tk. 5000 in his bank account . If the bank gives 10% annual profit , how much will be his balance after 6 years?

A)Tk. 3000

B)Tk. 5000

C)Tk. 7000

D)Tk. 8000

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20041 Math

If 18 is 15 percent of 30 percent of a certain number , what is the number?

A)36

B)40

C)81

D)400

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20042 Math

If a cube has a length of 8 cm , what is its total surface area?

A)64

B)96

C)384

D)256

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20043 Math

A)

B)

C)

D)8

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20044 Math

what is the ratio of 3/4 to the product 4 (3/4)?

A)3-Jan

B)4-Jan

C)9-Apr

D)4-Sep

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20045 Math

If A = { 1,2,3} And B = { 1, 2,5} then A -B .

A){1}

B){5}

C){3}

D){2}

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20046 Math

If set A = {1,2} and C = { 3,4} then (Cartesian product of set A and B ) is

A){1,2,3,4}

B){(1,3), (2,4)}

C){(1,3), (2,4), (1,4),(2,3)}

D)Try your self

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20047 Math

If for a square matrix A , then such a matrix is known as :

A)Idempotent matrix

B)Orthagonal matrix

C)Null matrix

D)Identity matrix

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20048 Math

How many bits string of length 4 are possible such that they contain 2 ones and 2 zeroes ?

A)4

B)2

C)5

D)6

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20049 Math

If A has 4 elements and B has 8 elements then the minimum and maximum number of elements in are respectively __

A)4,8

B)8,12

C)4,12

D)6,12

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20050 Math

In the given AP series find the number of terms 5, 8, 11, 14, 17, 20 , ..... 50.

A)11

B)13

C)15

D)16

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