1081 . A positive number, when decreased by 4, is equal to 21 times the reciprocal of the number. The number is:

A. 3
B. 5
C. 7
D. 9

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Answer: Option C

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পূবালী ব্যাংক লিমিটেড || সিনিয়র অফিসার (30-09-2023) || 2023

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1082 . A post office imposes a service charge of Tk. 75 per money order of the amount of Tk. 2,500 or less, and Tk. 100 per money order of the amount from Tk. 2,501 through Tk. 70,000. If Mariam makes 3 money orders of Tk. 1,825, Tk. 2,500 and Tk. 12,750, what is the total service charge she needs to pay?

A. 175
B. 225
C. 250
D. 275
E. None of these

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Answer: Option C

Explanation:

Service charge for the 1st order = 75 tk (As the amount is less than Tk.2500)

Service charge for the 2nd order = 75 tk (As the amount is equal to TK.2500)

Service charge for the 3rd order = 100 tk (As the amount is more than Tk.2500)

Therefore, the total service charge = 75 + 75 + 100 = 250 tk

ans: 250 tk

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1083 . A predator is chasing its prey. The predator takes 4 leaps for every 6 leaps of the prey and the predator covers as much distance in 2 leaps as 3 leaps of the prey. Will the predator succeed in getting its food ?

A. Yes
B. In the 6th leap
C. Never
D. Can't be determined
E. None of these

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Answer: Option A

Explanation:

If predator takes 2 leaps and prey takes 3 leaps to cover the same distance, then multiplying the distance by 2 you get predator 4 leaps and prey 6 leaps. With this ratio, they are covering the same distance with their respective leaps.

Therefore, they will always be the same distance away from each other unless either changes its speed.

so, ans: can't be determined.

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Bangladesh Bank - Assistant Director - 2009

A. 17:20
B. 23:20
C. 20:23
D. 20:17

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Answer: Option B

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অফিসার (জেনারেল) - 12.11.2021

A. 83.66 deg
B. 45 deg
C. 30 deg
D. 90 deg

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Answer: Option A

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Sonali Bank Ltd. Senior Officer Recruitment 01.06.2018

A. 13/3 hrs
B. 7 hrs
C. 8 hrs
D. 14 hrs

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Answer: Option D

Explanation:

Work done by the leak in 1 hour
= 1/2−3/7 = 1/14
∴ The leak will empty the tank in 14 hours

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

A. 4 hours
B. 5 hours
C. 3 hours
D. 6 hours

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Answer: Option B

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Bangladesh Bank - Assistant Director - 2010

A. 1080
B. 1125
C. 1050
D. 925

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Answer: Option B

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1089 . A rectangle area of 16 meters by 12 meters. is surrounded by a road of 3 meters wide. The area of the road is:

A. 78
B. 132
C. 204
D. 216

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Answer: Option C

Explanation:

best des
Area of the rectangle without the road = 16×12 = 192 sq. m.

Length with road on both side = 16 + 2×3 = 22 m.

Width with road on both side = 12 + 2×3 = 18 m.

Area of the rectangle including the road = 22×18 = 396 sq. m.

Area of the road = 396 - 192 = 204 sq. m.

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1090 . A rectangle is 14 cm long and 10 cm wide . If the length is reduced by x cms and its width is increased also by x cms so as to make it a square, then its area changes by :

A. 4
B. 144
C. 12
D. 2
E. None of these

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Answer: Option A

Explanation:

Area = 14 × 10 = 140 sq.cm

New length = ( 14 - x)

New width = ( 10 + x)

14 - x = 10 + x

2x = 4

x = 2

New Area = ( 14 - 2) × ( 10 + 2) = 144

change is area = ( 144 - 140) sq.cm = 4 sq.cm

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Bangladesh Bank - Assistant Director - 2009

1091 . A rectangle is twice as long as it is wide. If the width is a, what is the length of its diagonal ?

A. $a \sqrt{2}$
B. $a \sqrt{3}$
C. $a \sqrt{5}$
D. $3 a$

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Answer: Option C

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Bangladesh Bank - Assistant Director - 2004

A. 300 square feet
B. 180 square feet
C. 108 square feet
D. 64.8 square feet

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Answer: Option B

Explanation:

Area of the carpet = 9 x 12 = 108 sq ft

60% of the floor = 108 sq ft

So, total or 100% floor area = 108 x 100 / 60 = 180 sq ft

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1093 . A rectangular field will be fenced on three sides leaving a side of 20 feet uncovered. If the area on the filed is 680 squares feet, how many feet of fencing will be required?

A. 88
B. 34
C. 40
D. 68

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Answer: Option A

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উত্তরা ব্যাংক | অ্যাসিস্ট্যান্ট অফিসার | 23-07-2022

A. 18π
B. 18/π
C. π/18
D. 9/2π

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Answer: Option B

Explanation:

ধরি, Cylindrical container এর উচ্চতা h মিটার

এবং, ব্যাসার্ধ r = 10/2 মিটার = 5 মিটার

π(5)2 × h = 25 × 9 × 2

h = 25 × 9 × 2 /25π

h = 18/π

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Three Combined Bank Recruitment - Senior Officer 03 .08.2018 ||

A. Tk. 160
B. Tk. 240
C. Tk. 480
D. None of these

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Answer: Option A

Explanation:

Number of carpets required to cover the entire floor = total floor area/ area of carpet = 10x8 /2x2 = 20
Total cost of carpet squares = 20 x 12x(2/3) = Tk. 160

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সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

1081 . A positive number, when decreased by 4, is equal to 21 times the reciprocal of the number. The number is:

BdMerit-এর ১ বছরের প্রিমিয়াম প্যাকেজ কিনে ১০ মাস নিয়মিত প্রস্তুতি নিন—

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1083 . A predator is chasing its prey. The predator takes 4 leaps for every 6 leaps of the prey and the predator covers as much distance in 2 leaps as 3 leaps of the prey. Will the predator succeed in getting its food ?

1084 . A product is bougth ans sold at he profit of 15% the ratio of selling ans buying cost is --

1085 . a pull 6m high casts a shadow 2/3 m long on the ground ,then sun's elivation is -

1086 . A pump can fill a tank with water in 2 hours. Because of a leak, it took 7/3 hours to fill the tank. The leak can drain all water of the tank in:

1087 . A pump remover's water at a rate of 6 gallons per minute. How many hours will it take to remove 1800 gallons?

1088 . A radio dealer sold a radio at a loss of 2.5%. Had he sold it for Tk.100 more, he would have gained 15/2%. In order to gain 25/2%, he would sell it for---

1089 . A rectangle area of 16 meters by 12 meters. is surrounded by a road of 3 meters wide. The area of the road is:

1090 . A rectangle is 14 cm long and 10 cm wide . If the length is reduced by x cms and its width is increased also by x cms so as to make it a square, then its area changes by :

1092 . A rectangular carpet, that is 9 feet by 12 feet, covers 60% of a rectangular floor. What is the area of the floor?

1093 . A rectangular field will be fenced on three sides leaving a side of 20 feet uncovered. If the area on the filed is 680 squares feet, how many feet of fencing will be required?

1094 . A rectangular fish tank 25m by 9m has water in it to a level of 2m . This water is carefully poured into a cylindrical container with a diameter of 10m . How high will the water reach in the cylindrical container?

1095 . A rectangular floor that measures 8 metres by 10 metres is to be covered with carpet squares that each measures 2 metres by 2 metres. If a carpet square costs Tk. 12, calculator the total cost cover 2/3 of the floor?

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