121 . 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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Answer: Option B

Explanation:

Circumference of the circular path = 2/\50 = 100 /\ m This means 100 /\ m is the distance covered in 60 minutes Therefore distance covered in 15 minutes = 1/4 x 100 /\ m = 25/\ m Now distance covered in one revolution of the wheel = 2 /\(1/2) m = /\ m Therefore number of revolutions in 15 minutes = 25/\ //\ = 25 Read more on Brainly.in - https://brainly.in/question/8996103#readmore

Sonali &amp-Janata Bank | Officer (IT)| 04.01.2019

প্রিমিয়াম প্ল্যান: ১ মাস

99 ৳

৩০ দিনের জন্য সকল লাইভ এবং আর্কাইভ মডেল টেস্ট, প্রশ্ন ব্যাংক ও লেকচার শিট সহ অ্যাপ এর প্রিমিয়াম সব এক্সেস পাবেন।

সাবস্ক্রিপশন লিংক

122 . 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

View Answer	Favorite Question

Answer: Option D

Explanation:

Senior Officer (IT) - Sonali-Janata-BD Krishi-BD Development Bank Ltd - 30.11.2018

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

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Answer: Option B

Explanation:

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

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

View Answer	Favorite Question

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

125 . 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

View Answer	Favorite Question

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.

126 . 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.

127 . 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

Explanation:

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

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

View Answer	Favorite Question

Answer: Option B

Explanation:

প্রবেশনারি অফিসার | 02-04-2022

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

View Answer	Favorite Question

Answer: Option B

Explanation:

130 . 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

View Answer	Favorite Question

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)

131 . 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

View Answer	Favorite Question

Answer: Option D

Explanation:

Bangladesh Bank - Assistant Director - 2011

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

View Answer	Favorite Question

Answer: Option D

Explanation:

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

View Answer	Favorite Question

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 $

সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

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

View Answer	Favorite Question

Answer: Option C

Explanation:

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

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

View Answer	Favorite Question

Answer: Option A

Explanation:

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

121 . 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?

122 . 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?

123 . 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?

124 . 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?

125 . 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?

126 . A polygon that has 10 sides is called

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

128 . 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 ?

129 . 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 -

130 . 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?

131 . 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 ?

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

133 . 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?

134 . 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?

135 . 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 -

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