জব প্রিপারেশন

1701 Math

The three sides of a triangle are x+1 , 2x -1 and 3x +1 respectively and the perimeter is 25 cm. The length of the smallest side is -

A)5 cm

B)3 cm

C)4 cm

D)7cm

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1702 Math

The difference in Taka between simple and compound interest at 5% annually on a sum of Tk. 5000 after 2 years is -

A)12.5

B)25

C)50

D)500

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1703 Math

Log 36/log6 =

A)5

B)8

C)3

D)2

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1704 Math

If A = { 1,2,3,4,5} , then the number of proper subsets of A is -

A)120

B)30

C)31

D)32

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1705 Math

Every 3 minutes, 4 litres of water are poured into a 2,000 - litre tank , after 2 hours, what percent of the tank will be full?

A)0.40%

B)4%

C)8%

D)12%

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1706 Math

P and Q are brothers, R and S are sister. The father of P is brother of S. Q is related to R as -

A)son

B)brother

C)uncle

D)aunt

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1707 Math

The Next Number in the sequence 3,6,11,18 ,27, .... is -

A)34

B)36

C)38

D)40

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1708 Math

If 2x -1

A)

B)

C)

D)

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1709 Math

The average of six numbers is 14. The average of four of these numbers is 15. The average of the remaining two number is -

A)4

B)8

C)12

D)16

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1710 Math

If xy= 2 any , what is the value of x?

A)4

B)2

C)

D)8

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1711 Math

The perimeter of a circle measures cm, what is the area of the circle in sq cm ?

A)

B)

C)

D)

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1712 Math

There are 10 true-false questions in an examination. these questions can be answered in -

A)20 ways

B)100 ways

C)

D)1024 ways

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1713 Math

Two buses start at the same time from Delhi and Agra, which are 300 km apart, towards each other. After what time will they cross each other, if their speeds are 38 km per hour and 37 km per hour?

A)4 hours

B)3 hours

C)5 hours

D)6 hours

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1714 Math

A and B can together complete a piece of work in 4 days . If A alone can complete the same work in 12 days, in how many days can B alone complete that work?

A)4 days

B)5 days

C)6 days

D)7 days

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1715 Math

then the value of n is -

A)30 s

B)4

C)2

D)5

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1716 Math

How many seconds will a 500 m long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train , if the speed of the train is 63 km / hr?

A)25

B)30

C)40

D)45

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1717 Math

A lent TK. 5000 to B for 2 years and TK. 3000 to C for 4 years on simple interest at the same from both of them as interest . The rate of interest per annum is :

A)5%

B)7%

C)71/2 %

D)10%

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1718 Math

Nikki is 25% more efficient that Tina. Tina alone can build a craft in 20 days. Find the number of days taken by Nikki to finish the same piece of work ?

A)16

B)17

C)18

D)19

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1719 Math

A man can reach a certain place in 49 hours. If he reduces his speed by 1/15th , he goes 5 km less in that time. Find the total distance covered by him .

A)60 km

B)85 km

C)75 km

D)52 km

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1720 Math

A man takes twice as long to row a distance against the stream as to row the same distance in favor of the stream . The ratio of the speed of the boat (in still water ) and the stream is :

A)2:01

B)3:02

C)4:03

D)3:01

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1721 Math

A, B and C investment in a partnership in the ratio of 5 : 6 : 8. The ratio of their profit is 5 : 3 : 12. Find the ratio of time for their investment ?

A)2:01:03

B)1:03:05

C)1:07:05

D)4:03:05

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1722 Math

A shopkeeper marks the price of an article at TK. 80. What will be the selling price. if he allows two successive discounts of 5% each ?

A)TK. 72

B)TK. 85

C)Tk. 72.2

D)Tk. 7.2

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1723 Math

If ,what will be the value of n?

A)12

B)8

C)4

D)16

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1724 Math

If 1/5 : 1/N /1.25 , then the value of N is?

A)1.25

B)1.5

C)2.25

D)2.5

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1725 Math

How many liters of a 90% of concentrated acid needs to be mixed with a 75% Solution of concentrated acid to get a 30 liter Solution of 78% concentrated acid?

A)8

B)6

C)7

D)9

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1726 Math

Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart , is :

A)20-Mar

B)13/102

C)29/34

D)47/100

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1727 Math

In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random . What is the probability of getting a prize ?

A)7-May

B)5-Jan

C)7-Feb

D)2-Jan

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1728 Math

A rectangular block 6 cm by 12 cm 15 cm is cut up into an exact number of equal cubes. Find the least possible number of cubes.

A)30

B)40

C)50

D)60

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1729 Math

The ratio between the perimeter and the breadth of a rectangle is 5 : 1. If the area of the rectangle is 216 sq. cm, what is the length of the rectangle?

A)16 cm

B)24 cm

C)20 cm

D)18 cm

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1730 Math

The difference between the length and breadth of a rectangle is 23 m. If its perimeter is 206 m , then its area is :

A)

B)

C)

D)

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1731 Math

A tap can fill a tank in 6 hours. After half the tank is filled three more similar taps are opened . What is the total time taken to fill the tank completely?

A)4 hrs 15 min

B)3 hrs 45 min

C)3 hrs 24 min

D)4 hrs 51 min

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1732 Math

For any two numbers m, n; (m+n) : (m-n): mn=7 :1 : 60. Find the value of 1/m : 1/n

A)4:03

B)8:07

C)3:04

D)7:08

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1733 Math

The sum of three numbers is 98. If the ratio of the first to the second is 2 : 3 . And that of the second to the third is 5 : 8 , then the second number is -

A)30

B)20

C)10

D)15

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1734 Math

A)0.03

B)0.42

C)0.3

D)None of these

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1735 Math

If 20% of a =b, then b% of 20 is the same as:

A)6% of a

B)8% of a

C)10% of a

D)4% of a

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1736 Math

Unlike most liquids, which contract when they solidify, water expands by nine percentage when it freezes.

A)unlike most

B)solidify

C)by

D)percentage

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1737 Math

A driver of an auto rickshaw sees a lorry m ahead of him .After 30 seconds the lorry 90 m behind. If the speed of the auto rickshaw is 38 km /hr, then what is the speed of the lorry?

A)23 km/hr

B)25 km /hr

C)20 km /hr

D)18 km /hr

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1738 Math

If the ratio of speed of doing work of the persons is 1 : 3 : 5 , what is the ratio of this taken by these people to do the same amount of work ?

A)15:05:03

B)15:05:07

C)3:15:05

D)15:03:05

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1739 Math

A right angled triangle , whose perpendicular sides measure 1.8 cm and 2.4 cm ,is inscribed in a circle. What is the circumference of the circle (in cm)?

A)

B)

C)

D)None of these

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1740 Math

A)25

B)19

C)21

D)23

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1741 Math

If an article was sold at 18% profit on cost price then the selling price of the article was TK. 9381 . What would have been the selling price of the article , if it was sold at 25% profit?

A)TK. 9984.5

B)TK. 9927.5

C)TK. 9937.5

D)None of these

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1742 Math

In each of these questions , two equations (I) and (II ) are given . You have to solve both the equations and give answer .

A)x

B)x>y

C)

D)

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1743 Math

A box contains 21 balls numbered 1 to 21 . A ball numbered 1 to 21 . A ball is drawn and then another ball is brawn without replacement . What is the probability that both balls are even numbered?

A)7-Feb

B)14-Mar

C)21-Aug

D)21-May

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1744 Math

8 years ago, the ratio of A's age to B's age was 4 :5 At present the ratio of B's age and C's age is 4 : 5 At present , the difference between A's age and C's age is 20 years, then what is the sum of the ages of A, B and C?

A)138 years

B)164 years

C)148 years

D)152 years

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1745 Math

There is a group of 5 men , 6 women and 8 children . 1 man, 1 woman and one child are going to be selected to play a game. In how many ways can the selection be done?

A)240 ways

B)480 ways

C)120 ways

D)None of these

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1746 Math

12 students working for 5 hours a day can solve a certain number of problems in 8 days. How many students are needed to solve. Five times the original number of problems, if they work at 4 hours a day for 15 days?

A)90

B)45

C)95

D)40

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1747 Math

If the ratio of simple interest and principal is 8 : 25 and rate of interest is equal to the time invested then find the time of investment ?

A)12 years

B)8 years

C)10 years

D)16 years

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1748 Math

A seller marks his goods 30% above their cost price but allows 15% discount for cash payment . His percentage of profit when sold in cash is -

A)15%

B)9%

C)10.50%

D)8.50%

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1749 Math

A ladder is placed against a wall such that its foot is at a distance of 2.5 m from the and its top reaches a window 6 m about ground. Find the length of the ladder.

A)6.5 m

B)8.5

C)4.5

D)2.5 m

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1750 Math

If

A)3

B)2

C)

D)-2

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