জব প্রিপারেশন

1801 Math

In a class, there are 15 boys and 10 girls . Three students are selected at random. The probability that 1 girl and 2 boys are selected, is -

A)5-Jan

B)21/46

C)25-Mar

D)Jan-50

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1802 Math

An airplane flies along the four sides of a square at the speeds of 200, 400, 600 and 800 km/hr. Find the average speed of the plane around the field.

A)432 km/hr

B)375 km/hr

C)384 km/hr

D)221 km/hr

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1803 Math

X can complete a certain work in the same time in which Y and Z together can do it . If X and Y together can finish it in 10 days and Z alone in 15 days , then Y alone can do it in ?

A)22 days

B)25 days

C)18 days

D)20 days

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1804 Math

98.98

A)132

B)144

C)12

D)121

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1805 Math

A and B start a business with initial investment in the ratio 12 : 11 and their annual profits were in the ratio 4 : 1. If A invested the money for 11 months B invested the money for-

A)3 months

B)4 months

C)5 months

D)6 months

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1806 Math

If m =7 -4

A)3

B)8

C)4

D)6

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1807 Math

A container contains 40 liters of milk. From this container 4 liters of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained in the container?

A)29.16 liters

B)27.36 liters

C)29 liters

D)26.34 liters

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1808 Math

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

A)son

B)brother

C)uncle

D)father

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1809 Math

If w is 10% less than x and y is 30% less than z, then wy is what percent less than xz?

A)10%

B)20%

C)37%

D)40%

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1810 Math

Every 3 minutes , 4 liters of water are poured into a 2,000 liters tank. After 2 hours, what percent of the tank is full?

A)0.40%

B)4%

C)8%

D)12%

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1811 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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1812 Math

The H.C.F. of two numbers is 24. Which can be their L.C.M is -

A)84

B)128

C)148

D)120

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1813 Math

The average of eight numbers is 14 . The average of six of these numbers is 16. The average of the remaining two numbers is -

A)4

B)8

C)16

D)data inadequate

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1814 Math

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

A)120

B)30

C)31

D)32

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1815 Math

Two numbers are in the ratio 2 : 5 . If 16 is added to both the numbers , their ratio becomes 1 : 2 . The numbers are -

A)16,40

B)20,50

C)28,70

D)32,80

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1816 Math

If 1-2x

A)

B)

C)

D)

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1817 Math

A)2

B)3:07

C)4

D)6

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1818 Math

How many real roots does the polynomial

A)None

B)One

C)Two

D)Three

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1819 Math

If xy =2 and

A)4

B)2

C)2-Jan

D)8

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1820 Math

If a-1/a=2, what is

A)16

B)10

C)14

D)12

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1821 Math

The three sides of a triangle are x+1 , 2x-1, and 2x +1 respectively and the perimeter is 26 cm. The length of the smallest side is -

A)5 cm

B)6 cm

C)4 cm

D)7 cm

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1822 Math

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

A)20 ways

B)100 ways

C)ways

D)1024 ways

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1823 Math

If two fair coins are flipped, what is the probability that one will come up heads and the other tails?

A)4-Jan

B)3-Jan

C)2-Jan

D)4-Mar

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1824 Math

If the diagonal of a square measures cm. what is the area of the square in sq. cm?

A)

B)

C)128

D)256

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1825 Math

If , the value of the base is -

A)16/9

B)16-Sep

C)256/81

D)81/256

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1826 Math

If then the value of the expression is -

A)1

B)2-Jan

C)2

D)3

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1827 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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1828 Math

For y=-2x-8, what is the least value of x for which y is less then 9 ?

A)-9

B)-8

C)-7

D)-6

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1829 Math

A group of 7 numbers having a majority of boys is to be formed out of 7 boys and 4 girls The number of ways the group can be formed is -

A)80

B)295

C)90

D)110

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1830 Math

Two trains of equal length are running on parallel lines in the same direction at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is:

A)50 m

B)72 m

C)80 m

D)82 m

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1831 Math

A takes twice as much time as B or thrice as much time as C to finish a piece of work Working together, they can finis the work Working together , they can finish teh work in 2 days . B can do the work alone in -

A)4 days

B)8 days

C)6 days

D)12 days

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1832 Math

The percentage profit earned by selling an article for TK. 1920 is equal to the percentage loss interest by selling the same article for Tk 1280 . At what price should the article be sold to make 25% profit?

A)Tk. 2000

B)TK. 2200

C)TK. 2400

D)Data inadequate

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1833 Math

A person travels a certain distance at 3 km/hr and reaches 15 mi late. If he travels at 4 km/hr reaches 15 min late. If he travels at 4 km/hr reaches 15 min earlier. The distance he has to travel is -

A)8.5 km

B)6 km

C)7.2 km

D)12 km

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1834 Math

A boy travelled from the home to the college at the rate of 25 km/hr and walked back at the rate of 4 km/hr. If the whole journey took 5 hours 48 minutes, Find the distance of the college from the home?

A)5 km

B)10 km

C)15 km

D)20 km

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1835 Math

A)77

B)97

C)39

D)19

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1836 Math

Two men and three women can repair a bridge in 10 days while three men and two women can to same work in 8 days. If two men and one woman are used to finish this work , in how many days they will complete it?

A)15.0 days

B)13.5 days

C)11.0 days

D)12.5 days

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1837 Math

A boatman takes twice as long to go a distance upstream as to travel the same distance downstream . What is the ratio of the speed of the boatman (in still water) and the current?

A)2:03

B)3:01

C)1:03

D)4:03

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1838 Math

Speed of a boat in standing water is 9 km/hr and the speed of the stream is 1.5 km/hr. A man rows to a place at a distance of 105 km and comes back to the starting point .The total time taken by him is -

A)18

B)16

C)24

D)20

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1839 Math

A, B and C invested capitals in the ratio of 4 : 6 : 9 At the end of the business term, they received the profit in the ratio of 2 : 3 : 5. Find the ratio of their time for which they contributed their capitals.

A)1:01:09

B)2:02:09

C)10:10:09

D)9:09:10

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1840 Math

A trader marks his goods at 20% above the cost price . If he allows a discount of 5% for his down payment, his profit percent for such a transaction is -

A)15%

B)12%

C)14%

D)17%

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1841 Math

If a =

A)

B)

C)

D)

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1842 Math

Some money is divided amongst three workers A ,B and C such that 5 times A's share is equal to 12 times B's share which is equal to 6 times C's share. The ratio between the shares of A ,B and C is?

A)5:10:12

B)10:12:05

C)12:05:10

D)5:12:10

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1843 Math

At simple interest of 5% , 6% and 8% for three consecutive years, the interest earned is TK. 760. Find the principle?

A)Tk. 4000

B)TK. 4600

C)TK. 32oo

D)TK. 3600

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1844 Math

If the compound interest of a certain sum of money for two successive years be TK. 225 and Tk. 238.50 . What is the rate of interest per annum?

A)5%

B)7%

C)10%

D)6%

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1845 Math

A bag cotains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is -

A)22-Jan

B)Feb-91

C)22-Mar

D)Feb-77

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1846 Math

A word consists of 9 letters; 5 consonants and 4 vowels. There letters are chosen at random. What is the probability that more than one vowel will be selected?

A)13/42

B)May-42

C)17/42

D)14-Mar

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1847 Math

The ages of X and Y are in the proportion of 6:5 and total of their ages is 44 years. The proportion of their ages after 8 years will be

A)8:07

B)3:06

C)6:03

D)9:05

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1848 Math

The volume of a wall, 5 times as high as it is broad and 8 times as long as it is high, is 12.8 .Find the breadth of the wall.

A)30 cm

B)40 cm

C)50 cm

D)60 cm

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1849 Math

A rectangular field is to be fenced on three sides leaving a side of 20 m uncovered. If the area of the field is 680 ,how many meters of fencing will be required?

A)88 m

B)34 m

C)40 m

D)68 m

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1850 Math

A number is decreased by 10% and then increased by 10% .The number so obtained is 10 less than the original number. What was the original number?

A)4000

B)3000

C)2000

D)1000

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