4036 . A box contains 5 pink , 3 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

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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

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

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

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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.

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4038 . A bonus of Tk.25000 will be distributed among three salespersons in proportion of the amounts by which there sales exceed the basic quota of Tk.200000. Mrs. Asha sold Tk.600000. Mr. Bashir sold Tk.450000 and Mr. Saif sold Tk,300000. How much did Mr. Saif receive from this bonus?

A. Tk.3333.33
B. Tk.6666.67
C. Tk.5555.56
D. Tk.4444.44
E. None of these

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Answer: Option A

Explanation:

Their sales exceeded the basic quota of TK 200000 by 400000, 250000 and 100000 respectively.

So, Mr. Saif will receive a bonus amount = {100000/(400000 + 250000 + 100000)}x25000 = 3333.33 TK.

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4039 . A boat travel with a speed of 10 km / hr in still water. If the speed of the stream is 3 km / hr then find time taken by boat to travel 52 km downstream .

A. 2 hrs
B. 4hrs
C. 4 hrs
D. 9 hrs

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Answer: Option B

Explanation:

Speed downstream = (10 + 3) km/hr = 13 km/hr
Time taken to travel 52 km downstream = 52/13 hours = 4 hours

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

A. 17 mph
B. 15 mph
C. 12mph
D. 9 mph
E. 4 mph

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Answer: Option B

Explanation:

We know,

60 minutes = 1 hour

Or, 1 minutes = 1/60 hour

Or, 180 minutes = 180/60 hour

= 3 hours

Here, Times (t) = 3 hours;

Distance (s) = 45 miles

And Velocity (v) = ? Mph

Again, we know that,

S = vt

= > v = s/t

= > v = (45÷3) mph

= > v = 15 mph

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Bangladesh Bank - Assistant Director - 2013 ||

A. 36
B. 48
C. 24
D. 31

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Answer: Option A

Explanation:

Average of 12 innings = x
According to the question:
(12x + 96)/13 = x + 5
x = 96 - 65 = 31.
Average in 13 innings = 31 + 5 = 36 Ans: A .

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

A. 5
B. 10
C. 15
D. 100

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Answer: Option A

Explanation:

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

A. 2 dozen
B. 4 dozen
C. 5 dozen
D. 8 dozen

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Answer: Option B

Explanation:

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4044 . A bag contains an equal number of one rupee , 50 paisa and 25 paisa coins . If the total value is TK. 35 , how many coins of each type are there?

A. 20
B. 15
C. 18
D. 22

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Answer: Option A

Explanation:

Let X coins of each type of there
Total Value = Tk. 35
Now,
X + X/2 + X/4 = 35
4X + 2X + X = 140
7X = 140
X = 20

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

A. 7/19
B. 9/19
C. 10/19
D. 11/19

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Answer: Option C

Explanation:

মোট ১৯ টার ভেতর ৯টি হলুদ বলসহ মোট ১০টি বল তুললে তবেই নিশ্চিত একটি লাল অথবা কালো বল উঠবে।

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সমন্বিত ৯ ব্যাংক | 07-01-2022 ||

A. 36 days
B. 24 days
C. 16 days
D. 17 days

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Answer: Option B

Explanation:

shortcut - (18*12)/(18 - 12)

= 36

as 2/3 work then = (36*2)/3

= 24 days

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

A. Tk. 1425.00
B. Tk.1537.50
C. Tk. 1576.00
D. Tk. 1500.00

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Answer: Option D

Explanation:

Let the total profit be Tk. 100.
After paying to charity, A's share = (95*3/5) = Tk. 57.
If A's share is Tk. 57, total profit = Tk. 100.
If A's share is Tk. 855, total profit = (100/57*855) = 1500.

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

A. 6 months
B. 8 months
C. 10 months
D. 12 months

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Answer: Option C

Explanation:

Let the total profit be Tk. z. Then, B's share = Tk.. 2z/3, A's share = Tk. ( z - 2z/3 ) = Tk. z/3. A : B = z/3 : 2z/3 = 1:2 Let the total capital be Tk. X and suppose B's money was used for x months. Then. (1(x) / 4 * 15) / (3x) / 4 * y) = 1/2 < = > y = (15 * 2 / 3) = 10 . Thus, B's money was used for 10 months.

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

A. 4 : 5 : 9
B. 4 : 5 : 10
C. 8 : 9 : 10
D. 20 : 25 : 18
E. None of these

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Answer: Option D

Explanation:

A:B = 4:5

A:C = 10:9

A:B = (4 x 5) : (5 x 5) = 20:25

A:C = (10X2): (9X2) = 20:18

A:B:C = 20:25:18

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4050 . A 5% monthly salary increase resulted in a salary increase of Tk.6000 per year for an employee. What was her monthly salary before increase?

A. Tk.12000
B. Tk.3600
C. Tk.36000
D. Tk.1200
E. None of these

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Answer: Option E

Explanation:

মাসিক ৫% বৃদ্ধির পর ১২ মাসে মোট বৃদ্ধি পায় ৬০০০ টাকা

সুতরাং এক মাসে বৃদ্ধি পাবে ৬০০০/১২ = ৫০০ টাকা

ধরি তার মাসিক বেতন 'ক' টাকা

শর্তমতে

ক এর ৫%=৫০০

=>ক = (৫০০*১০০)/৫

=> ক =১০,০০০ টাকা।

সুতরাং তার পূর্বের বেতন ১০ হাজার টাকা।

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4036 . A box contains 5 pink , 3 green and 2 yellow balls, Three balls are picked up randomly. What is the probability that none of the ball drawn is green

4037 . 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?

4038 . A bonus of Tk.25000 will be distributed among three salespersons in proportion of the amounts by which there sales exceed the basic quota of Tk.200000. Mrs. Asha sold Tk.600000. Mr. Bashir sold Tk.450000 and Mr. Saif sold Tk,300000. How much did Mr. Saif receive from this bonus?

4039 . A boat travel with a speed of 10 km / hr in still water. If the speed of the stream is 3 km / hr then find time taken by boat to travel 52 km downstream .

4040 . A biker rode 45 miles in 180 minutes. What ws his speed (mph) during this ride ?

4041 . A batsman has a certain average of runs for 12 innings. In the 13th inning, he scores 96 runs thereby increasing his average by 5 runs. what is his average after the 13 innings ?

4042 . A ball and a bat costs 110 taka. The bat costs 100 taka more than the ball. How much does the ball cost ?

4043 . A bakery opened yesterday with its daily supply of 40 dozen rolls. Half of the rools were sold by noon and 80% of the remaining rolls were sold between noon and closing time. How many dozen rolls had not been sold when the bakery closed yesterday?

4044 . A bag contains an equal number of one rupee , 50 paisa and 25 paisa coins . If the total value is TK. 35 , how many coins of each type are there?

4045 . A bag contains 7 red, 9 yellow and 3 black balls. If a ball is picked at random, what is the probability that the ball drawn will be either a red of a black ball.

4046 . A ans B can do a work in 12 days. B can do the same work in 18 days. In how many days A can complete the 2/3 of the same work?

4047 . A and B invest in a business in the ratio 3:2 . If 5% of the total profit goes to charity and A's share is Tk. 855 the total profit is -

4048 . A and B are partners in a business A contributes 1/4 of the capital for 15 months and B receives 2.3 of the profit . Find for how long B's money was used.

4049 . A : B = 4 : 5, A : C = 10 : 9, then A : B : C =?

4050 . A 5% monthly salary increase resulted in a salary increase of Tk.6000 per year for an employee. What was her monthly salary before increase?

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