2611 . P works twice as fast as Q . If Q can complete a work in 12 days independently , the number of days in which P and Q can together finish the work is:

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

View Answer	Favorite Question

Answer: Option A

Explanation:

Q এর সময় লাগে = 12 দিন

P এর সময় লাগে = 12/2 = 6 দিন

কাজটি দুজনে একত্রে করলে মোট সময় লাগে

= 12 × 6 / 12 + 6 = 72 /18 = 4 দিন।

প্রিমিয়াম প্ল্যান: ১ মাস

99 ৳

৩০ দিনের জন্য সকল লাইভ এবং আর্কাইভ মডেল টেস্ট, প্রশ্ন ব্যাংক ও লেকচার শিট সহ অ্যাপ এর প্রিমিয়াম সব এক্সেস পাবেন।

সাবস্ক্রিপশন লিংক

2612 . Painting a well costs BDT. 50 per sq. m. If the 20m long wall has a width of 10m , how much would it cost to paint 7/10th of the wall?

A. 5000
B. 10000
C. 8000
D. 7000

View Answer	Favorite Question

Answer: Option D

Explanation:

দেয়ালটির ক্ষেত্রফল = ২০×১০= ২০০ বর্গমিটার

দেয়ালটির ৭/১০ অংশ হবে= (২০০এর ৭/১০)= ১৪০ ব.মি.

১৪০ ব.মি রং করতে খরচ হবে= ১৪০×৫০= ৭০০০ টাকা

Sonali &amp- Janata Bank Ltd. Senior Officer (IT/ICT) 08.06.2018

A. 0.99%
B. 1.02%
C. 1.03%
D. 1.00%

View Answer	Favorite Question

Answer: Option A

Explanation:

ঢাকা ইলেকট্রিক সাপ্লাই কোম্পানি ।। Assistant Engineer (20-05-2023)

A. 15%
B. 20%
C. 25%
D. None

View Answer	Favorite Question

Answer: Option B

Explanation:

গ্যাস ট্রান্সমিশন কোম্পানি লিমিটেড | সহকারী ব্যবস্থাপক | ২০.০৪.২০১৮

A. Tk.3600
B. Tk.6000
C. Tk.9600
D. Tk.18000

View Answer	Favorite Question

Answer: Option D

Explanation:

1 column x 1 inch ≡ 1200 TK

So, total cost = 5 x 3 x 1200 = 18000 TK.

2616 . Per day wage rate of workers is reduced 50% due to economic slowdown. After one year, the wage rate is increased by 60%. If the per day wage rate before the decrease was Tk 100, then what is the per day wage rate now?

A. 90
B. 100
C. 60
D. 80

View Answer	Favorite Question

Answer: Option D

Explanation:

After reduction it became=100-(100×50%)=50 taka

Now, the rate is=50+(50×60%)=80 taka

(ans)

2617 . Perimeter of rectangle is 200 meter. Its width is 3/7 of its length . What is the length in meter ?

A. 60
B. 50
C. 90
D. 70

View Answer	Favorite Question

Answer: Option D

Explanation:

In case of a rectangle,

2(Length + Width) = perimeter

or, 2(Length + 3/7 of Length) = 200

or, 10/7 of Length = 200/2

So, Length = 200/2 x 7/10 = 70 meter

2618 . Peter purchased a machine for TK. 80,000 and spent TK. 5,000 on repair and TK. 1,000 on transport and sold it with 25% profit , At what price did he sell the machine ?

A. TK.1,06,250
B. TK.1,07,500
C. TK.1,17,500
D. TK. 1,05,100

View Answer	Favorite Question

Answer: Option B

Explanation:

Total expense = ( 80, 000 + 5, 000 + 1, 000) = 86, 000Tk

At 25% profit,

Selling price = 86, 000 + 86, 000 × 25/100 = 1, 07, 500.

Bangladesh Bank - Officer(Cash) - 2016

A. Macbeth
B. Hamlet
C. Lear
D. Antigone

View Answer	Favorite Question

Answer: Option A

Explanation:

খ ইউনিট (2009-2010) || ঢাকা বিশ্ববিদ্যালয় || 2009

A. 263
B. 383
C. 242
D. 111
E. None of them

View Answer	Favorite Question

Answer: Option C

Explanation:

The odd one out in the given list is 242.

All the other numbers in the list are odd, while 242 is the only even number.

2621 . Pick up the stranger of the series: 2,4,8,10,16,32

A. 10
B. 32
C. 16
D. 8

View Answer	Favorite Question

Answer: Option A

Explanation:

DESCO Recruitment Test 2022 | Sub Station Attendant | 17.09.2022

A. 2
B. 2.5
C. 3
D. 3.5

View Answer	Favorite Question

Answer: Option C

Explanation:

Hints: Pipe A, B, and C can fill the tank in 1 hour

( 1/5 + 1/10 + 1/30) portion

= (12 + 6 + 2)/6o portion

= 20/60 portion

= 1/3 portion

All three pipes will fill the tank in 3 hours.

2623 . Pipe P can fill and empty tank in 4 hours but pipe Q can completely empty the same tank in 8 hours. But the pipes were opened alternately after every two hours starting with pipe P then in how many hours, the tank was completely filled ?

A. 6 hours
B. 5 hours
C. 10 hours
D. 12 hours

View Answer	Favorite Question

Answer: Option C

Explanation:

Let, Capacity of tank be 8 liter (LCM of 4,8)

In 1 hour P fill = (8/4) = 21

Q empty = (8/8) = 1L

In last 2 hour only p works and fill = 2x 2 = 4L

Remains = 8 - 4 = 4 L.

Now,

in 4 hour net filling of P and Q = (2x 2) - (1 x2) = 2L

2L net fill in 4 hr

4L net fill in = (4×4)/2 = 8 hr

Total time = 8 + 2 = 10 hr (Ans)

Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯

A. 100
B. 120
C. 140
D. 180

View Answer	Favorite Question

Answer: Option B

Explanation:

Let the distance between City A and City B be "D" kilometers.

Palash drives from City A to B at 40 km per hour, so the time taken for the first leg of the journey is D/40 hours.

He returns over the same road at 30 km per hour, so the time taken for the return journey is also D/30 hours.

He spends 8 hours away from home, including a one-hour stop for lunch. Therefore, the total driving time is 8 - 1 = 7 hours.

Now, we can set up an equation using the time formula (Time = Distance / Speed) for the total driving time:

(D/40) + (D/30) = 7

To solve for D, we can find a common denominator and then solve for D:

(3D/120) + (4D/120) = 7

Now, combine the fractions:

(7D/120) = 7

To isolate D, multiply both sides of the equation by 120/7:

D = (7 * 120) / 7

D = 120 kilometers

So, the distance between City A and City B is 120 kilometers. The answer is 120.

2625 . Poppy flipped a coin three times and got heads each time. What is the probability that she gets heads on the next flip?

A. 1
B. 1/4
C. 1/2
D. 1/3

View Answer	Favorite Question

Answer: Option C

Explanation:

মুদ্রাকে একবার নিক্ষেপে Head উঠার সম্ভবনা = 1/2

অতএব, একটি কয়েনকে 3 বার নিক্ষেপের পর

পরের বার অর্থাৎ ৪র্থ বার নিক্ষেপে

Head উঠার সম্ভবনা = 1/2

2611 . P works twice as fast as Q . If Q can complete a work in 12 days independently , the number of days in which P and Q can together finish the work is:

2612 . Painting a well costs BDT. 50 per sq. m. If the 20m long wall has a width of 10m , how much would it cost to paint 7/10th of the wall?

2613 . parentage installed of hydrophilic power plant of BPDB is ____

2614 . Pens that used to cost Tk. 150 for a package of 3 now cost Tk. 300 for a package of 5. What is the percent increase in the price of these pens?

2615 . Per column inch (1 column x 1 inch) area newspaper advertisment costs Tk.1200. How much would a "5 columns by 3 inches" newspaper advertisment cost?

2616 . Per day wage rate of workers is reduced 50% due to economic slowdown. After one year, the wage rate is increased by 60%. If the per day wage rate before the decrease was Tk 100, then what is the per day wage rate now?

2617 . Perimeter of rectangle is 200 meter. Its width is 3/7 of its length . What is the length in meter ?

2618 . Peter purchased a machine for TK. 80,000 and spent TK. 5,000 on repair and TK. 1,000 on transport and sold it with 25% profit , At what price did he sell the machine ?

2619 . Pick the odd one out.

2620 . Pick the odd one out -331, 482, 551, 263, 383, 242, 111

2621 . Pick up the stranger of the series: 2,4,8,10,16,32

2622 . Pipe A can fill a tank in 5 hours, pipe B in 10 hours and pipe C in 30 hours. If all the pipes are open, in how many will the tank be filled?

2623 . Pipe P can fill and empty tank in 4 hours but pipe Q can completely empty the same tank in 8 hours. But the pipes were opened alternately after every two hours starting with pipe P then in how many hours, the tank was completely filled ?

2624 . Plash drives from city A to B at 40 km per hour and returns over the same road at 30 km per hour and spends 8 hours away from home including a one hour stop for lunch. what is the distance (in km) between city A and city B?

2625 . Poppy flipped a coin three times and got heads each time. What is the probability that she gets heads on the next flip?

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