121 . A picnic attracts 240 persons. There are 20 more men than women and 20 more adults than children . How many men are at this picnic?

A. 250
B. 75
C. 110
D. 200

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Answer: Option B

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Assit. Programmer | Sonali Bank- Rubali Bank- BD Krishi Bank - 16.11.2018

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122 . A picnic was attended by 240 persons. There were 20 more men than women and 20 more adults then children. How many men were there in the picnic?

A. 110
B. 130
C. 200
D. 240
E. 75

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Answer: Option E

Explanation:

Let, Number of women x

so, Number of men = x + 20

so, x + x + 20 = 240

বা, 2x = 220

বা, x = 110

Number of women 110

and Number of men = 110 + 20 = 130

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123 . A police man spots a mugger from a distance of 200 meters. As the police man starts chasing the mugger, the mugger also starts also starts running. Given that the speed of the mugger is 10 km/h and that of the police man is 12 km/h, how far would have the mugger run before he is caught?

A. 3 km
B. 4 km
C. 2 km
D. 1 km
E. None of these

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Answer: Option D

Explanation:

Lets say the mugger ran for T hours before being caught.

200 meters = 0.2 km

ATQ, 12T = 10T + 0.2

Or, 12T - 10T = 0.2

Or, T = 0.1 hour

So, he ran = 10T = 10 x 0.1 = 1 km.

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124 . A polygon that has 10 sides is called

A. Heptagon
B. Decagon
C. Hexagon
D. Octagon

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Answer: Option B

Explanation:

A polygon with 10 sides is called decagon. While a polygon with 8 and 12 sides are octagon and Dodecagon respectively.

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125 . A polygon with 25 sides a can be triangulated into ___

A. 23
B. 20
C. 22
D. 21

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Answer: Option A

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Assit. Programmer | Sonali Bank- Rubali Bank- BD Krishi Bank - 16.11.2018

A. 9!+10!
B. 2 × 10!
C. 9! × 10!
D. 9!

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Answer: Option B

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প্রবেশনারি অফিসার | 02-04-2022

A. 4 ( 1 3 ) hours
B. 14 hours
C. 7 hours
D. 8 hours

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Answer: Option B

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128 . A rectangular floor that measures 8 meters by 10 meters is to be covered with carper that each measure 2 meters by 2 meters. If the carpet cost Tk. 12 a piece, what is the total cost to cover the floor?

A. Tk. 200
B. Tk. 240
C. Tk. 480
D. Tk. 960

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Answer: Option B

Explanation:

area of rectangular floor = 8*10 = 80 meter-meter

area of carpet = 2*2 = 4 meter-meter

number of carpet needed = 80/4 = 20

So, the total cost to cover the floor = 20*12 = 240 tk (Ans)

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129 . A researcher computed the mean , median and standard deviation for a set of performance score . If 5 were to be added to each score , which of these three statistics would change ?

A. The mean only
B. The median only
C. The standard deviation only
D. The mean and median only
E. The mean and the standard deviation only

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Answer: Option D

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Bangladesh Bank - Assistant Director - 2011

A. 30%
B. 20%
C. 40%
D. 50%

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Answer: Option D

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জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা-(NSI) Assistant Director- Research officer &amp- Assistant Programmer-০৮/১০/২০২১

A. Tk. 198
B. Tk. 216
C. Tk. 220
D. Tk. 230

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Answer: Option B

Explanation:

Wholesale cost of video recorder = 200 $
Video recorder was priced at 20 percent above 200 = 240 $

% discount given by store employee = 10
Emlpoyee paid = .9 * 240 = 216 $

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সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 32 %
B. 36 %
C. 47 %
D. 51 %

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Answer: Option C

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NRBC Bank PLC || Trainee Assistant Officer (TAO) (26-10-2024) || 2024

A. 45: 56
B. 45:51
C. 47 : 56
D. 47 : 51

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Answer: Option A

Explanation:

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অফিসার (ক্যাশ ) - Sonali | Rupali | BD Krishi | Rajshahi Krishi Unnayn | Investment Corporation Of Bangladesh - ২৯. ০৩.২০১৯

A. 30%
B. 37%
C. 23%
D. 27%

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Answer: Option A

Explanation:

Let the cost price = Tk.100

Therefore, Selling price = 100×117100 = Tk.117100×117100 = Tk.117

Therefore, Marked price = 117×10090 = 130117×10090 = 130

Therefore, Profit Percentage = (130−100)100×100 = 30%

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Officer (General) -Ansar VDP Unnayan | BD House Building Finance Corporation 28.09.2018

A. 50%
B. 75%
C. 80%
D. 125%

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Answer: Option D

Explanation:

Let's calculate the cost price (CP) and selling price (SP) for the mangoes:

Cost Price (CP) of 15 mangoes = Tk. 10 Cost Price (CP) of 1 mango = Tk. 10 / 15 = Tk. 2/3

Selling Price (SP) of 10 mangoes = Tk. 15 Selling Price (SP) of 1 mango = Tk. 15 / 10 = Tk. 3/2

Now, let's calculate the profit percentage:

Profit per mango = Selling Price (SP) per mango - Cost Price (CP) per mango Profit per mango = (Tk. 3/2) - (Tk. 2/3) Profit per mango = (3/2) - (2/3) Profit per mango = (9/6) - (4/6) Profit per mango = (5/6)

Now, calculate the profit percentage:

Profit Percentage = (Profit per mango / Cost Price per mango) * 100 Profit Percentage = [(5/6) / (2/3)] * 100 Profit Percentage = [(5/6) * (3/2)] * 100 Profit Percentage = (15/12) * 100 Profit Percentage = (5/4) * 100 Profit Percentage = 125%

So, the shopkeeper earns a profit of 125%

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121 . A picnic attracts 240 persons. There are 20 more men than women and 20 more adults than children . How many men are at this picnic?

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122 . A picnic was attended by 240 persons. There were 20 more men than women and 20 more adults then children. How many men were there in the picnic?

123 . A police man spots a mugger from a distance of 200 meters. As the police man starts chasing the mugger, the mugger also starts also starts running. Given that the speed of the mugger is 10 km/h and that of the police man is 12 km/h, how far would have the mugger run before he is caught?

124 . A polygon that has 10 sides is called

125 . A polygon with 25 sides a can be triangulated into ___

126 . A popular website requires users to create a password consisting of digits only. If no digit may be repeated and each password must be at least 9 digits long, how many passwords are possible ?

127 . A pump can fill a tank with water in 2 hours . Because of a leak , it took 213213 hours to fill the tank.The leak can drain all the water of the tank in -

128 . A rectangular floor that measures 8 meters by 10 meters is to be covered with carper that each measure 2 meters by 2 meters. If the carpet cost Tk. 12 a piece, what is the total cost to cover the floor?

129 . A researcher computed the mean , median and standard deviation for a set of performance score . If 5 were to be added to each score , which of these three statistics would change ?

130 . A restaurant makes 20% profit after selling a set menu at a discount of 20% . What is the percentage increase of marked price?

131 . A retail appliance store priced a video recorder at 20 precent above the wholesale cost of Tk. 200. If a store employee applied the 10 percent employee discount to the retail price to buy the recorder, how much did the employee pay for the recorder?

132 . A school has a total of 90 students. There are 30 students taking Physics, 25 taking English, and 13 taking both. Approximately what percentage of the students is taking either Physics of English?

133 . A shopkeeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of the cost price and the printed price of the book is -

134 . A shopkeeper gains 17% after allowing a discount of 10% on the marked price of an article . Find his profit percent if the article is sold at marked price allowing no discount .

135 . A shopkeeper purchase 15 mangoes for Tk. 10 and sells them at 10 mangoes for Tk. Thus, he earns a profit of-

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