46 . If 2x+y =4, then how much is 6x-3y?

A. 22
B. 40
C. 42
D. 12

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Answer: Option D

Explanation:

Hints : 2x - y = 4
3(2x - y) = 3 × 4 [ both side 3 multiply]
6x - 3y = 12

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DESCO Recruitment Test 2022 | Sub Station Attendant | 17.09.2022

A. 80
B. 50
C. 40
D. 9

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Answer: Option A

Explanation:

Let, the number is x

Accordingly,

20%× 80% × x = 12.8

⇒ x = (128 × 100 × 100)/(20 × 80 × 10)= 80.

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Bangladesh Bank - Assistant Director - 2015

A. 66.67
B. 15
C. 6.67
D. 1.5

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Answer: Option D

Explanation:

x এর 20% = 0.03

বা, x এর 20/100 = 0.03

বা, x/5 = 0.03

বা, x = 0.15

ans : 0.15

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Bangladesh Bank - Assistant Director - 2004

A. 1.5
B. 3
C. -2
D. -2.5

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Answer: Option C

Explanation:

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বাংলাদেশ ব্যাংক অফিসার ০২ -১২-২০২২

A. 100
B. 20
C. 45
D. 90

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Answer: Option C

Explanation:

Everybody does 9 handshakes - but then they are counted twice, so 10 * 9 /2 = 45.

Alternative calculation:

Person no 1 does 9 handshakes

Person no 2 does 8 - he already has shaken hands with no1

And so on …

person no 9 does 1 handshake with person no 10

Btw person no10 has already shaken everybody’s hand, ok

So we get 9 + 8 + … + 1

The seven years old Gauß might tell you that this is 10 * 9 / 2 = 45

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Bangladesh bank - officer ( general) - 27.04.2018

A. 2%
B. 2.2%
C. 2.5%
D. 3%

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Answer: Option B

Explanation:

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Bangladesh Bank - Assistant Director - 2015

A. Tk. 3700
B. Tk. 7400
C. Tk. 8325
D. Tk. 11100
E. None of these

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Answer: Option A

Explanation:

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53 . A man has 72 green marbles and 108 red marbles. He decides to pack them into packets of the same size, each containing either all red of all green marbles. What is the maximum number of marbles he can put in each packet?

A. 36
B. 24
C. 18
D. 12
E. None of these

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Answer: Option A

Explanation:

The maximum number of marbles in a single package is the HCF (Highest Common Factor) of 72 and 108.

72 = 2 x 2 x 2 x 3 x 3

108 = 2 x 2 x 3 x 3 x 3

∴HCF of 72 and 108 is = 2 x 2 x 3 x 3 = 36.

So the max number of marbles that can go into a package is 36.

ans: 36

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54 . A boat goes 13km upstream in 39 minutes. The speed of stream is 3km/hr. The speed of boat in still water is-

A. 27km/hr
B. 25km/hr
C. 20km/hr
D. 23km/hr

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Answer: Option D

Explanation:

Let speed of the boat is u kmph

Speed of the stream is v = 3 kmph

Time taken t = 39 min = 39/60 hour

Distance s = 13 km

We have

u - v = s/t

u - v = 13/(39/60) = (13×60)/39 = 20

= > u - 3 = 20

= > u = 20 + 3 = 23

Ans 23 kmph.

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সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || অফিসার (জেনারেল) (08-03-2024)

A. vegetables are subject to downward price control in city area by the government
B. City dwellers purchase vegetable produced only in the city area
C. Vegetables are mostly common item of every meal of a city dweller
D. Abundantly produced rural vegetables area not allowed to sell in city area

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Answer: Option D

Explanation:

To weaken the claim that "Price of vegetables is very high in city area in comparison to that in rural area," we need to find a fact that contradicts or undermines this claim. Let's analyze the options provided:

A. There is least demand for vegetable in city area.
This fact supports the claim that the price of vegetables is high in the city area because low demand could contribute to higher prices due to limited supply and higher transportation costs.

B. Vegetables are subject to downward price control in city area by the government.
This fact weakens the claim by suggesting that the government has implemented measures to control and regulate vegetable prices in the city area, which could result in lower prices.

C. City dwellers purchase vegetable produced only in the city area.
This fact does not weaken the claim but rather supports it. If city dwellers exclusively purchase vegetables produced in the city area, it implies a limited supply, which can contribute to higher prices.

D. Vegetables are mostly a common item of every meal of a city dweller.
This fact does not weaken the claim but rather supports it. If vegetables are a common item in every meal of city dwellers, it suggests high demand, which can contribute to higher prices.

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Bangladesh Bank - Assistant Director - 2010

A. 16
B. 32
C. 48
D. 64

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Answer: Option A

Explanation:

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বাংলাদেশ অর্থনৈতিক অঞ্চল কর্তৃপক্ষ (BEZA) | সহকারী ব্যবস্থাপক | ৩০.১১.২০১৮

B. 4
C. 8
D. 16

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Answer: Option C

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58 . {(am)n}p = ?

A. amnp
B. a12mnp
C. am + n + p
D. a12m12n12p

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Answer: Option B

Explanation:

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59 . [3.75{7.8 - 2.3(12.75 - 9.25)}] - 5 =?

A. 1.7
B. 1.5
C. 1.4
D. 2.5

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Answer: Option D

Explanation:

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60 . Zeba walks to school al $3 / 5^{t h}$ of her normal pace. causing her journey to take 10 minutes longer than usual. How many minutes does she usually take to walk to school?

A. 40
B. 35
C. 20
D. 15
E. None

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Answer: Option D

Explanation:

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46 . If 2x+y =4, then how much is 6x-3y?

47 . If 20 percent of 80 percent of a number is 12.8, then what is the number ?

48 . If 20% of X is 0.03 the X equals to

49 . If (3x+2y)=8 and (2x-2y)=2, then find the value of (4-3x)

50 . At the end of a banquet 10 people shake hands with each other . How many handshakes will be in total?

51 . A person who has an income of Tk. 10,00 pays what percent of his or her income in taxes?

52 . A man loses Tk. 55.50 yearly when the annual rate of interest falls from 11.5% to 10% his capital is:

53 . A man has 72 green marbles and 108 red marbles. He decides to pack them into packets of the same size, each containing either all red of all green marbles. What is the maximum number of marbles he can put in each packet?

54 . A boat goes 13km upstream in 39 minutes. The speed of stream is 3km/hr. The speed of boat in still water is-

55 . " Price of vegetables is very high in city area in comparison to that in rural area." This claim is weakened by the following facts except :

56 . Current age of Zanil's father is three times of Zamil. After 16 years from now father's age will be twice of Zamil. What is the current age of Zamil?

57 . |−4||+4|=?

58 . {(am)n}p = ?

59 . [3.75{7.8 - 2.3(12.75 - 9.25)}] - 5 =?

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