76 . A book is originally price at BDT 900, but marked down by 30%. Again when the actual sales occurs a discount of 10% is offered on the marked price, what is the final sales price in BDT?

A. 360
B. 540
C. 500
D. 486
E. None of these

View Answer	Favorite Question

Answer: Option A

Explanation:

At 30% discount, marked down price = 70% of 900 = 630 BDT.

Another 10% discount on marked price = 10% of 900 = 90 BDT

Final sale = 630 - 90 = 540 BDT.

77 . A box contains 5 pink , 5 green and 2 yellow balls, Three balls are picked up randomly. What is the probability that none of the ball drawn is green

A. 3/4
B. 2/8
C. 4/3
D. 2/3

View Answer	Favorite Question

Answer: Option D

Explanation:

5 টি pimk, 3 টি green ও 2 টি yellow সহ মোট বলের সংখ্যা 10 টি।

নির্বিআারে 3 টি বল তোলা বলটি green না হওয়ার সম্ভাবনা = (5 + 2) C3 / 10C3 = 7C3/10 C3

= ( 7! / 3! 4!) / ( 10! / 3! 7!)

= 7!/ 3! 4! × 3! 7!/10!

= 7 × 6 × 5 / 10 × 9 × 8

= 7/24

Senior Officer- 8 Bank Recruitment Test 31-08-2018

A. 125 gm
B. 50 gm
C. 100 gm
D. 250 gm
E. None

View Answer	Favorite Question

Answer: Option E

Explanation:

79 . A car goes 15 miles on a gallon of octen when it is driven at 50 miles per hour. When the car is driven at 60 miles per hour, it only goes 80% as far. How many gallons of octane is needed to travel 200 mile if half the distance is traveled at 50 miles per hour and the rest at 60 miles per hour?

A. 13.33
B. 16.67
C. 10.6
D. 15
E. None of these

View Answer	Favorite Question

Answer: Option D

Explanation:

A car goes 15 km with a gallon of octane at 50 km/hr.

Again,

If travels with 60 km/hr, it goes 80% far as that of before. i.e.

D = 80%×15 = 12 km.

Now,

According to question, if 100 km is travelled in 50 km/hr and another 100 km in 60 km/hr then,

In 50 km/hr: 1 gallon = 15 km

In 60 km/hr: 1 gallon = 12 km

Hence,

Total required gallons of octane is;

100/15 + 100/12

= 15 gallons.

80 . A car uses 1 liter of petrol to travel 17 miles. After a tune-up, the car travels 17% farther on one liters. How many liters ( best approximation ) of petrol will it take for the car to travel 170 miles after a tune-up ?

A. 8.1
B. 7.9
C. 9.3
D. 9.1
E. 8.5

View Answer	Favorite Question

Answer: Option E

Explanation:

After tune - up, the car travels (117% of 17 miles ≈ 20 miles) in one litre petrol.

Therefore, petrol required for 170 miles = 170/20 = 8.5 litre.

Bangladesh Bank - Assistant Director - 2011

A. 15
B. 18
C. 21
D. 25

View Answer	Favorite Question

Answer: Option A

Explanation:

Let's break down the information provided:

During the promotion, a customer can buy x donuts for the regular price of Tk. 15 and get 3 donuts free.
The donut price per dozen during the promotion is Tk 2 less than the normal donut price per dozen.
Let's denote the normal price per dozen as "P" (in Tk).

So, during the promotion:

Price for x donuts (including 3 free donuts) = Tk. 15
Price per dozen during the promotion = P - 2 Tk
Now, let's set up the equation for the price of x donuts during the promotion:

(x + 3) * (P - 2) = 15

Now, we need to find the value of x. We know that P is the price per dozen during the normal period.

To solve for x, we'll first express P in terms of x:

P = (15 / (x + 3)) + 2

Now, we need to find a value of x for which P is a multiple of 5 (to make the total price of x donuts equal to Tk. 15). We'll try different values of x:

If x = 15: P = (15 / (15 + 3)) + 2 = 1 + 2 = 3 The total price for 15 donuts (including 3 free) at Tk. 3 per dozen would be Tk. 15.
So, the value of x is indeed 15, and this satisfies the condition of the promotion.

Therefore, x = 15.

সিজিডিএফ | অডিটর 21-01-2022

A. 7,000
B. 24,000
C. 40,000
D. 168,000

View Answer	Favorite Question

Answer: Option D

Explanation:

7 days consist of = 24*7 hours = 168 hours.

Since every hour the machine produces 1000 units of product P,

the total product during 168 hours is = 1000 x 168 = 168,000.

সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 251.2 cubic ft
B. 1,256 cubic ft
C. 5,024 cubic ft
D. 3,140 cubic ft
E. 4,410 cubic ft

View Answer	Favorite Question

Answer: Option B

Explanation:

Volume of cylinder = πr2h

Volume of circular pool = π × ( 20/2)2 × 4 = 1256.64 ft3

Bangladesh Bank - Assistant Director - 2011

A. 3 feet
B. 5 feet
C. 6 feet
D. 4 feet
E. None of them

View Answer	Favorite Question

Answer: Option A

Explanation:

Of the 3 sides, two of them are mentioned first which is 3 and 4 and the water is at 5 ft. When it is on another two sides, we now see that the other side itself is 5 ft. So, all the water is full in the tank. Only way the water can rise is upto rest side, which is 3 ft.

Bangladesh Bank - Assistant Director - 2012

A. 180
B. 135
C. 90
D. 60
E. None of these

View Answer	Favorite Question

Answer: Option E

Explanation:

Remaining books = 1 - 2/3 = 1/3

1/3 of the books = 36

So, 2/3 of the books = 36 x (2/3) / (1/3) = 72

Then, total amount received from the sold books = 72 x 2.3 = 165.6 TK.

86 . A company's profits have doubled for each of the last 5 years . If the total profits for the last 5 years were TK. 62 million , what were the profits in the first year ?

A. 1
B. 2
C. 4
D. 5
E. 6

View Answer	Favorite Question

Answer: Option B

Explanation:

Let, first year profit = x, as profit have doubled for each year, so

2nd year profit = 2x

3rd year profit = 2x ×2 = 4x

4th year profit = 4x×2 = 8x

5th year profit = 8x × 2 = 16x

Total profit = x + 2x + 4x + 8x + 16x = 31x

According to the question

31x = 62

x = 2

Bangladesh Bank - Assistant Director - 2013 ||

A. 250
B. 335
C. 300
D. 320
E. None of these

View Answer	Favorite Question

Answer: Option B

Explanation:

Profit on first 1000 TK sale = 6% of 1000 = 60 TK.

Profit on the rest (6000 - 1000 = 5000) TK sale = 55×5000/1000 = 275 TK.

Total profit = 60 + 275 = 335 TK

88 . A cube has a volume of 8M3 . If each side is doubled is length, what will be its new volume ?

A. 16 M 3
B. 24 M 3
C. 32 M 3
D. 48 M 3
E. 64 M 3

View Answer	Favorite Question

Answer: Option E

Explanation:

The volume of a cube is calculated by cubing the length of its sides. If each side is doubled in length, the new volume can be found by cubing the new side length.

Given that the original volume is 8M^3, we need to find the new volume when each side is doubled.

The side length of the cube can be calculated as the cube root of the volume: side length = ∛(8M^3) = 2M.

When each side is doubled in length, the new side length becomes 2 * 2 = 4M.

The new volume of the cube can be calculated by cubing the new side length: new volume = (4M)^3 = 64M^3.

Therefore, the new volume of the cube is 64M^3.

The correct answer is E. 64M^3.

Bangladesh Bank - Assistant Director - 2011

A. 2:3
B. 3:4
C. 5:6
D. 1:6

View Answer	Favorite Question

Answer: Option A

Explanation:

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

A. 2k
B. 6k
C. 7k
D. 8k
E. None of these

View Answer	Favorite Question

Answer: Option C

Explanation:

Length of the smaller field = L
Width of the smaller field = W
According to the information given, the larger field has twice the length and four times the width of the smaller field. Therefore:

Length of the larger field = 2L
Width of the larger field = 4W
Now, we can calculate the areas of both fields:

Area of the smaller field = L * W = K (given)

Area of the larger field = (2L) * (4W) = 8LW

To find the difference in the areas of the larger and smaller fields, subtract the area of the smaller field from the area of the larger field:

Difference in areas = Area of the larger field - Area of the smaller field Difference in areas = 8LW - K

Now, we can express this difference in terms of the dimensions of the smaller field:

Difference in areas = 8(LW) - K

Since we are given that the area of the smaller field is K, we can substitute this value:

Difference in areas = 8(K) - K

Now, Difference in areas = 8K - K Difference in areas = 7K

So, the area of the largest field is greater than the area of the smaller field by 7K.

76 . A book is originally price at BDT 900, but marked down by 30%. Again when the actual sales occurs a discount of 10% is offered on the marked price, what is the final sales price in BDT?

77 . A box contains 5 pink , 5 green and 2 yellow balls, Three balls are picked up randomly. What is the probability that none of the ball drawn is green

78 . A cake weighting 750 gram has three ingredients: flour, sugar and fruits. There is twice as much as flour as sugar and one and a half times as much as sugar as fruits. What is the quantity of sugar(in grams) in the cake?

79 . A car goes 15 miles on a gallon of octen when it is driven at 50 miles per hour. When the car is driven at 60 miles per hour, it only goes 80% as far. How many gallons of octane is needed to travel 200 mile if half the distance is traveled at 50 miles per hour and the rest at 60 miles per hour?

80 . A car uses 1 liter of petrol to travel 17 miles. After a tune-up, the car travels 17% farther on one liters. How many liters ( best approximation ) of petrol will it take for the car to travel 170 miles after a tune-up ?

81 . A certain bakery ran a promoion: a customer can but x donuts for the regular price of Tk.15 total and get 3 donuts free. If the donut price per dozen during the promotion is Tk 2 less than the normal donut price per dozen, what is the value of x?

82 . A certain machine produces 1,000 units of product P per hour. Working contineously at this constant rate, this machine will produce how many units of product P in 7 days?

83 . A circular pool is filling with water . Assuming the water level will be 4ft deep and the diameter is 20 ft , what is the approximate volume of the water needed to fill the pool ?

84 . A closed rectangular tank contains a certain amount of water. When the tank is placed on its 3 ft by 4 ft side, the height of the water in the tank is 5 ft . Wen the tank is placed on another side of dimensions 4 ft by 5 ft , what is the height, in feet,

85 . A collection of books went on sale and 2/3 of these were sold for Tk.2.30 each. None of the 36 remaining books were sold. What was the total amount received for the books that were sold?

86 . A company's profits have doubled for each of the last 5 years . If the total profits for the last 5 years were TK. 62 million , what were the profits in the first year ?

87 . A company makes a profit of 6% on its first Tk.1000 of sales each day and Tk.55 per thousand on all sales in excess of Tk.1000 for that day. How much profit will the company make in a day when sales are Tk.6000?

88 . A cube has a volume of 8M3 . If each side is doubled is length, what will be its new volume ?

89 . A fair six side dice is rolled. Find th probality of getting an odd number or a number less than 4.

90 . A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area k, then the area of the larger field is greater than the area of the smaller field by what amount?

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