জব প্রিপারেশন

16201 Math

In one year, the population of city increased by 20%. The next year, it decreased by 10%. What was the percentage increase in the population over the two years?

A)8

B)10

C)15

D)none of these

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16202 Math

The ages of two persons differ by 16 years. 6 years ago, the elder one was 3 times as old as the younger one. What is the present age of the older person in years?

A)20

B)10

C)30

D)none of these

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16203 Math

If a number exceeds another number by 13 and the larger number is 1.5 times the smaller number, then the smaller number is :

A)13

B)26

C)31

D)none of these

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16204 Math

The effective speed of a boat travelling downstream is 20 kmph, whereas it is 10 kmph upstream. What is the speed of the stream current in kmph?

A)3

B)4

C)5

D)none of these

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16205 Math

If window received 1/3 of her hushand's estate, and each of her three sons received 1/3 of the balance. If the widow and one of her sons received a total of Tk. 360,000 from the estate, what was the worth of the estate in Tk?

A)540,000

B)576,000

C)648,000

D)none of these

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16206 Math

If the coordinates of A and B are (4, 1) and (-2, 7) respectively, then the coordinates of the midpoint of AB are :

A)(1, 4)

B)(-3, 4)

C)(-1, 4)

D)none of these

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16207 Math

Mahfuz has a total of Tk. 480 in the denominations of one Taka, five Taka and Ten taka nones. The numbers of different notes are equal. what is the total number of notes?

A)45

B)75

C)90

D)none of these

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16208 Math

The ratio of the number of boys and girls in a school is 3:2. If 20% of the boys and 25% of the girls are scholarship holders, what percent of the students are not scholarship holders?

A)56

B)70

C)78

D)none of these

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16209 Math

If a and b are both even numbers, which of the following COULD be odd integer?

A)(a+1)2 + (b+1)2

B)[(a+1)*(b+1)]-1

C)(a+1)/(b+1)

D)none of these

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16210 Math

A number consists of two digits. If the digits interchange places and the new number is added to the original number, then the resulting number will be divisible by which of the following?

A)3

B)5

C)9

D)11

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16211 Math

A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?

A)32

B)48

C)64

D)96

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16212 Math

A bank offers 5% compound interest calculated on half-yearly basis. A customer deposits Tk. 1600 each on 1st July of a year. At the end of the year, how much he would have gained as interest?

A)Tk 121

B)Tk 123

C)Tk 160

D)Tk 240

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16213 Math

Two number M and N are such that the sum of 5% of M and 4% of N is two-third of the sum of 6% of M and 8% of N. What is the ratio of M and N?

A)1:01

B)2:03

C)2:05

D)4:03

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16214 Math

Ranu and Rabu appeared at an examination. Rabu secured 9 marks more than Ranu and her marks was 56% of the sum of their marks. The marks obtained by both of them are ---

A)39, 30

B)41, 32

C)42, 33

D)43, 34

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16215 Math

In a class, 20% of the students are below 20 years of age. The number of students above 20 years of age is two-third of the number of students of 20 years of age which is 48. What is the total number of students in the class?

A)72

B)80

C)96

D)100

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16216 Math

A large cube is formed from the material obtained by melting three smaller cubes of 3,4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

A)2:01

B)3:02

C)25:18:00

D)27:20:00

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16217 Math

Two trains of the same length running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively andhey cross each other in 23 seconds. What is the ratio of their speeds?

A)1:02

B)1:03

C)3:02

D)5:08

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16218 Math

From a group of 7 men and 6 women, five persons are to be selected to form a committee so that at least 3 men are there on the committee. In how many ways can it be done?

A)756

B)735

C)645

D)564

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16219 Math

Three numbers which are co-prime to each other are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is ---

A)75

B)81

C)85

D)89

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16220 Math

The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and difference of the digits of the number if the ratio between the digits the number is 1 : 2?

A)4

B)8

C)16

D)24

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16221 Math

X, Y and Z jointly started a business. It was agreed that X would invest Tk 6,500 for 6 months, Y, Tk 8,400 for 5 months and Z, Tk 10,000 for 3 months. X wants to be the working member for which, he was to receive 5% of the profits. The profit earned was Tk 7,400. What is the share of Y in the profit?

A)Tk 1,900

B)Tk 2,660

C)Tk 2,800

D)Tk 2,840

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16222 Math

Let N be the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case. Then sum of the digits in N is ---

A)4

B)5

C)6

D)8

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16223 Math

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?

A)0.45

B)0.4

C)0.25

D)0.5

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16224 Math

Albert invested an amount of Tk 8,000 in a fixed deposit scheme for 2 years at compound interest rate 5% per annum. How much amount will albert get on maturity of the fixed deposit?

A)Tk 8,600

B)Tk 8,620

C)Tk 8,820

D)Tk 9,000

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16225 Math

Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is ----

A)60 gallons

B)120 gallons

C)150 gallons

D)170 gallons

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16226 Math

A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they gain meet at the starting point altogether?

A)26 minutes and 18 seconds

B)42 minutes and 36 seconds

C)45 minutes and 38 seconds

D)46 minutes and 12 seconds

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16227 Math

The ratio of income of Kamran and Dolon is 3 : 4. The ratio of their expenditures is 4 : 5. Find the ratio of their savings if the savings of Kamran is one fourth of his income?

A)5:04

B)19:12

C)4:06

D)12:19

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16228 Math

The average of 5 positive integers is 60. If the average of 3 of these integers is 67, what is the greatest possible value that one of the other two integers can have?

A)98.5

B)63.5

C)99

D)98

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16229 Math

How many liters of fuel are needed for a steamer to sail 2400 kilometers if it uses 40 liters of fuel to sail 320 kilometers?

A)250

B)255

C)260

D)300

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16230 Math

Some marbles are divided between two brothers, Lipu and Tipu in a ratio of 15.8 and the difference in the number of marbles they get is 14. How many marbles did Tipu get?

A)14

B)5

C)10

D)16

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16231 Math

If r=3z and 9z=6y, then r=?

A)y

B)2y

C)5y

D)10y

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16232 Math

A two-digit number has 6 in its unit digit. The sum of its digits is one-fourth of the number itself. What is the number?

A)36

B)46

C)66

D)76

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16233 Math

Mr. Jamal employed 50 workers to finish a work within 30 days. After 20 days he found out that only 50% of the work had been completed. How many additional workers will Mr. Jamal need to finish the work in time?

A)100

B)50

C)40

D)35

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16234 Math

Arif incurred a loss of 25% by selling a used mobile phone set at taka 1500. How much could he gain/lose by selling it at 2,200 taka?

A)10% loss

B)20% gain

C)10% gain

D)20% loss

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16235 Math

60% of the students of a college are male. 60% of the males in the college speak French and 40% of the students of the college speak French. What is the percentage of the females in the college who do not speak French?

A)40%

B)90%

C)60%

D)85%

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16236 Math

which of the following fractions is smaller than 8/9 and greater than 2/5?

A)7-Mar

B)8-Mar

C)18-Jul

D)23-Sep

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16237 Math

There are 87 balls in a jar. Each ball is painted with at least one of two colors, red or green. It is observed that 2/7 of the balls that have red color also have green color, while 3/7 of the balls that have green color also have red color. what fraction of the balls in the jar has both red and green colors?

A)14-Jun

B)7-Feb

C)Jun-35

D)29-Jun

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16238 Math

There are 4 women and 4 men sitting in a waiting room for job. If two of the applicants are selected at random, what is the probability that both will be women?

A)2-Jan

B)7-Mar

C)4-Mar

D)14-Mar

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16239 Math

If x is the smallest positive integer such that 4410 multiplied by x is the square of an integer, then x must be

A)10

B)12

C)15

D)18

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16240 Math

In dividing a number by 585, student employed the method of short division. He divided the number successively by 5, 9 and 13 (factors of 585) and got the remainders 4, 8, 12 respectively. If he had divided the number by 585, what would have been the remainder?

A)24

B)144

C)292

D)584

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16241 Math

Mohona deposits Tk. 10,000 into a savings account that pays interest at an annual rate of 8%, compounded quarterly. After 6 months, how much interest has Mohona earned?

A)Tk. 200

B)Tk. 240

C)Tk. 404

D)Tk. 560

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16242 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)18 cm

C)20 cm

D)24 cm

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16243 Math

At a collegae football game, 4/5 of the seats in the lower deck of the stadium were sold. If one-forth of all the seating in the stadium is located in the lower deck and if 2/3 of all the seats in the stadium were sold. What fraction of the unsold seats in the stadium were in the lower deck?

A)20-Mar

B)6-Jan

C)3-Jan

D)15-Jul

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16244 Math

How many squares of 2 inch dimension will be required to cover a rectangle of 8 inch breadth and 6 inch length?

A)7

B)24

C)12

D)48

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16245 Math

In a class, 120 students are male and 100 students are female, 25% of the male students and 20% of the female students are engineering student passed the final exam. What percentage of engineering students passed the exam?

A)5%

B)10%

C)16%

D)22%

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16246 Math

The probability of rolling any number on a weight 6-sided die, with faces number 1 through 6, is directly proportional to the number rolled. What is the probability of getting 5, if the die is rolled only once?

A)6-Jan

B)6-May

C)16-May

D)21-May

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16247 Math

What is the ratio of the sum of the even positive integers between 1 and 100 (inclusive) and the sum of the odd positive integers between 100 and 150?

A)102/125

B)50/51

C)51/56

D)202/251

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16248 Math

Arif is now 5 times as old as Babu, but 7 years now he will be 3 times as old as babu. How old is Arif now?

A)7

B)8

C)9

D)11

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16249 Math

If x is an even number, what is the difference between the smallest ever number grater than (5x+6) and the largest even number less then (3x+9)?

A)2x

B)2x-3

C)7x+15

D)2x+3

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16250 Math

Babu gave 20% of his marbles to Sadeq, and 20% of the rest of marbles to Tipu. If he now has 320 marbles, how many did he have originally?

A)420

B)500

C)640

D)720

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