2791 . Pick the odd one out -331, 482, 551, 263, 383, 242, 111

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

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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.

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2792 . Pick up the stranger of the series: 2,4,8,10,16,32

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

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Answer: Option A

Explanation:

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DESCO Recruitment Test 2022 | Sub Station Attendant | 17.09.2022

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

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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.

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2794 . 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

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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)

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

2795 . Pipes A and B can fill a tank in 5 and 6 hours respectively. Pipe C can empty it in 12 hours. If all the three pipes are opened together, then the tank will be filled in:

A. $2 \frac{8}{11} h o u r s$
B. $3 \frac{9}{17} h o u r s$
C. $4 \frac{1}{2} h o u r s$
D. $1 \frac{13}{17} h o u r s$

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Answer: Option B

Explanation:

A in 1 hour fills 1/5 part

B in 1 hour fills 1/6 part

C in one hour empties 1/12 Part

Together they fill in 1 hour

= 1/5 + 1/6 - 1/12 = (12 + 10 - 5)/60 = 17/60 part

Total Time = 60/17 = 3 (9/17) hours

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Bangladesh Bank - Officer(Cash) - 2016

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

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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.

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2797 . Point A is 10 km west of point B. Point B is 30 km north of point C. Point C is 20 km east of point D. What is the distance between point A and D?

A. $10 \sqrt{20} k m$
B. $10 \sqrt{10} k m$
C. $20 \sqrt{10} k m$
D. $30 \sqrt{10} k m$

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Answer: Option B

Explanation:

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সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || সিনিয়র অফিসার (10-11-2023) || 2023

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

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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

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প্রবেশনারি অফিসার | 02-04-2022

A. 3
B. 6
C. 7.5
D. 10

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Answer: Option D

Explanation:

Here, Samiras age = 20 years

Farzana age = ( 20×3) years = 60 years

Let, x years age Farzana was five times of Samira

According to question,

(20 - x) 5 = 60 - x

100 - 5x = 60 - x

4x = 40

x = 10

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বাংলাদেশ ব্যাংক || অফিসার (ক্যাশ) (21-07-2023)

A. 3
B. 10
C. 7.5
D. 6
E. None of these

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Answer: Option B

Explanation:

Here, Samiras age = 20 years

Farzana age = ( 20×3) years = 60 years

Let, x years age Farzana was five times of Samira

According to question,

(20 - x) 5 = 60 - x

100 - 5x = 60 - x

4x = 40

x = 10

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2801 . Present ages of Samad and Akmal are in the ratio of 5:4 respectively . Three years later ,the ratio of their ages will become 11:9 respectively . What is akmals present age in years ?

A. 24
B. 27
C. 29
D. 40
E. None

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Answer: Option A

Explanation:

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Probationary Officer | 31.03.2017 ||

A. None

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Answer: Option A

Explanation:

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বিমান বাংলাদেশ এয়ারলাইন্স লিঃ নিয়োগ পরীক্ষা-২০১৮। গ্রাউন্ড সার্ভিস অ্যাসিসটেন্ট। ১৩.১০.২০১৮

A. 25%
B. 24%
C. 26%
D. 30%

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Answer: Option B

Explanation:

Let, the price of product be 100

and then after first discount price becomes = 100 - 20 = 80 tk

and then again it is discounted by = 5% of 80 = 4 tk

so price of telvision becomes = 80 - 4 = 76 tk

So,The ultimate discount is = 100 - 76 = 24 tk

ans: 24%

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2804 . Printer P, Printer Q and Printer R can print a batch of flyers in 4,8 and 16 hours respectively. How many Printer R are needed with One Printer P and three Printer Q to

A. 3
B. 6
C. 8
D. 12
E. None

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Answer: Option B

Explanation:

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A. 2
B. 5
C. 25
D. Cannot be determined
E. None of these

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Answer: Option E

Explanation:

Given that,

1. The difference between R and Q = The difference of age between Q and T

2. Sum of age of R and T is So l.C [RTT = 50]

Question : R - Q = ?

R - Q = Q - T

(R + T) = 2Q

Now given that, RTT = 50

So, 50 = 2Q and Q = 25

Question is R - Q = ?

Here we know the age of Q, but not of R

There for R - G can not be determined.

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2791 . Pick the odd one out -331, 482, 551, 263, 383, 242, 111

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2792 . Pick up the stranger of the series: 2,4,8,10,16,32

2793 . 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?

2794 . 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 ?

2796 . 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?

2798 . Poppy flipped a coin three times and got heads each time. What is the probability that she gets heads on the next flip?

2799 . Present age of Fariha is thrice the present age of Samira who is 20. How many years ago was the age of Fariha five times that of Samira?

2800 . present age of Farzana is thrice the present age of Samira who is 20. How many years ago were the age of Farzana five times that of Samira?

2801 . Present ages of Samad and Akmal are in the ratio of 5:4 respectively . Three years later ,the ratio of their ages will become 11:9 respectively . What is akmals present age in years ?

2802 . Price of 2 pencils is less than 20% of price of a pen. What is the ratio of the price of a pen to that of a pencil?

2803 . Price of a product is discounted by 20% and the reduced price is then discounted by 5%. The ultimate discount is:

2804 . Printer P, Printer Q and Printer R can print a batch of flyers in 4,8 and 16 hours respectively. How many Printer R are needed with One Printer P and three Printer Q to

2805 . Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is definitely the difference between R and Q's age?

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