2386 . In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither blue nor green?

A. $\frac{2}{3}$
B. $\frac{3}{4}$
C. $\frac{7}{19}$
D. $\frac{8}{21}$

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Answer: Option D

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

A. 1/3
B. 3/4
C. 7/19
D. 8/21

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Answer: Option A

Explanation:

7/(8+7+6)=7/21=⅓ .

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Bangladesh Bank - Assistant Director - 2010

A. 3/4
B. 9/10
C. 5/6
D. 8/13

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Answer: Option C

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

A. 3/4
B. 9/10
C. 5/6
D. 8/13

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Answer: Option C

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Two Combined Bank Recruitment Test Post: Officer - 28/09/2018

A. Tk. 24,200
B. Tk. 36,300
C. Tk. 72,600
D. 48,400

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Answer: Option D

Explanation:

দেওয়া আছে, A : C = 2:1=6 : 3

A:B = 3:2=6 : 4

A:B:C=6:4:3

B's share= 157300 × 4/6+4+3

= 48400 টাকা

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2391 . In a business A and C invested amounts in the ratio 2 : 1 whereas A and B invested amounts in the ratio 3 : 2 . If their annual profit be Tk. 157300, then B's share in the profit is

A. Tk. 24200
B. Tk. 24200
C. Tk. 48000
D. Tk. 48400

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Answer: Option D

Explanation:

Assume that investment of C = x
Then, investment of A = 2x Investment of B = 2A/3 = 4x/3 (since ratio of investment of A : B = 2 : 3 i.e B = 2A/3) A : B : C
= 2x : 4x/3: x
= 2 : 4/3 : 1
= 6 : 4 : 3
B's Share = 157300 × 4/(6 + 4 + 3) = 157300 × 4/13 = 12100 × 4 = Tk. 48400.

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Officer (Cash) -Sonali Bank | BD Development | BD Krishi Bank - 12.10.2018

A. Tk. 120
B. Tk. 150
C. Tk. 175
D. Tk. 200
E. None of these

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Answer: Option C

Explanation:

ratio of the investment of Raj:Rafi:Rabi = 700*5:500*6:300*8

= 3500:3000:2400

= 35:30:24

so raj share = 445*35/(35 + 30 + 24) = 175 tk

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2393 . In a certain class consisting of 36 students, some boys and some girls exactly 1/3 of the boys and exactly 1/4 of the girl walk to school. what is the greatest class who walk to school?

A. 9
B. 10
C. 11
D. 12

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Answer: Option C

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প্রবাসী কল্যাণ ব্যাংক-সিনিয়র অফিসার-09-10-2021

A. TBN
B. VNB
C. BNY
D. NYB

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Answer: Option B

Explanation:

T এর দুটি বণৃ পরেরটি W
A এর দুটি বণৃ পরেরটি D
তেমনি
S এর দুটি বণৃ পরেরটি V
K এর দুটি বণৃ পরেরটি N
V এর দুটি বণৃ পরেরটি B

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Bangladesh Bank - Officer - 2015

A. TK.6000
B. TK.22,500
C. TK.24000
D. TK.40,000
E. TK.60,000

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Answer: Option D

Explanation:

Total tax of assessed = ( 240×4) Tk. = 960Tk.

Tk. 4 is tax of Tk. 100

Tk.960 is tax of Tk. ( 100/4 ×960) = 24000 Tk.

So, 60% of x = 24000Tk.

60x×x /100 = 24000

x = 2400000/60 = 40000 Tk.

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2396 . In a certain country a person is born every 7 seconds and a person dies every 13 seconds. Therefore, the birth and death rates account of a population growth rate of one person every-0

A. 6 seconds
B. 15.17 seconds
C. 20 seconds
D. None of these

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Answer: Option B

Explanation:

7 second এ জন্মগ্রহন করে 1 জন

1 second এ জন্মগ্রহন করে 1/ 7 জন

একইভাবে 13 second এ মৃত্যবরণ করে 1 জন

1 second এ মৃত্যুবরণ করে 1/ 13 জন

growth in 1 second = ( 1/7 - 1/13) = 6 / 91

6/91 জন জন্মগ্রহন করে 1 sec

1 জন জন্মগ্রহন করে 91 / 6 second = 15. 17 second এ।

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2397 . In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of girls in the class?

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

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Answer: Option C

Explanation:

ধরি,বালক এর সংখ্যা, ক জন এবং বালিকা এর সংখ্যা, খ জন

অতএব তাদের অনুপাত= ক : খ

প্রশ্নমতে, ১/৬(ক+খ)=১/৪×খ

বা, ক+খ/৬=খ/৪

বা, ৬খ=৪ক+৪খ

বা, ২খ=৪ক

বা, খ= ২ক

অতএব, বালক ও বালিকা এর অনুপাত= ক : ২ক = ১ : ২

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2398 . In a certain population, there are times as many people aged 21 or under as there are people over 21. The ratio of those 21 or under to the total population is :

A. 1 to 2
B. 1 to 3
C. 1 to 4
D. 2 to 3
E. 3 to 4

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Answer: Option E

Explanation:

Let the number of people over 21 years be x. 
Given that the number of people aged 21 or under  =  3x 
So total population  =  4x 
Required ratio  =  3x : 4x  =  3:4 
So the answer choice is (e) 3 to 4.

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2399 . In a certain store, the profit is 320% of the cost. If the cost increases 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?

A. 30%
B. 70%
C. 100%
D. 250%
E. None of these

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Answer: Option B

Explanation:

Cost = 100
Profit = 320% of 100 = 320
Selling price = 100 + 320 = 420
New cost = 100 + (25% of 100 )
= 100 + 25 = 125
New Profit = 420 - 125
= 295
New Profit Percenage = (295/420×100)%
=70.23%
=70%

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2400 . In a certain village, m liters of water are required per household per month. At this rate if there are n households in the village, how long (in months) will p liters of water last?

A. p/mn
B. mn/p
C. mp/n
D. np/n

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Answer: Option A

Explanation:

otal water required per month for N houses = M x N
Total Water Available = P
Hence time until which this will be available = P/ MN

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2387 . In a box , there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green ?

2388 . In a box there are 10 apples and 2/5th of the apples are rotten. If three apples are taken out from the box, what will be the probability that at least one apples is rotten.

2389 . In a box three are 10 apples and 2/5th of the apples are rotten.If three apples are taken out from the box,what will be the probability that at least one apple is rotten.

2390 . In a business, A and C invested amounts in the ratio 2:1,whereas the ratio between amounts invested by A and B was 3:2. If Tk. 1,57,300 was their profit,how much amount did B receive ?

2391 . In a business A and C invested amounts in the ratio 2 : 1 whereas A and B invested amounts in the ratio 3 : 2 . If their annual profit be Tk. 157300, then B's share in the profit is

2392 . In a business Raj invested Tk. 700 for 5 months. Rafi invested Tk. 500 for 6 months and Rabi invested Tk. 300 for 8 months. If total profit was Tk. 445, how much money will Raj get as his share of profit?

2393 . In a certain class consisting of 36 students, some boys and some girls exactly 1/3 of the boys and exactly 1/4 of the girl walk to school. what is the greatest class who walk to school?

2394 . In a certain code 'TABLE' is written as WDEOH. How would 'SKY' be written in that code?

2395 . In a certain community, property is assessed value. if a tax payer is assessed TK. 240 per quarter in property taxes, what is the appraised value of the property?

2396 . In a certain country a person is born every 7 seconds and a person dies every 13 seconds. Therefore, the birth and death rates account of a population growth rate of one person every-0

2397 . In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of girls in the class?

2398 . In a certain population, there are times as many people aged 21 or under as there are people over 21. The ratio of those 21 or under to the total population is :

2399 . In a certain store, the profit is 320% of the cost. If the cost increases 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?

2400 . In a certain village, m liters of water are required per household per month. At this rate if there are n households in the village, how long (in months) will p liters of water last?

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