5191 . If, x - y =5, xy = 6. then x + y = ?

A. 7
B. -7
C. 1
D. None

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Answer: Option B

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পল্লী বিদ্যুতায়ন বোর্ড। এসিস্ট্যান্ট এনফোর্সমেন্ট কোঅডিনেটর। 31-12-2021

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5192 . In a basket the ratio of banana and apple is 3 : 2. If 5 bananas are removed from the basket then the ratio become 1 :1. How many apples were there is the basket?

A. 5
B. 10
C. 15
D. 20

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Answer: Option B

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বাংলাদেশ সেতু কর্তৃপক্ষ (সহকারী সাব-ইঞ্জিনিয়ার) 18-12-2020

A. 20
B. 30
C. 40
D. 50

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Answer: Option B

Explanation:

150 children have taken meal .

Children = 200-150 =50

The remaining meal is to be catered to 50 children.

Now 200 child = 120 man

So, 50 children =200120×50=30 Man

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পূবালী ব্যাংক লিমিটেড || সিনিয়র অফিসার (30-09-2023) || 2023

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

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Answer: Option D

Explanation:

Born in 1 second= \frac{1}{7} and death in 1 second = \frac{1}{10} birth rate = \frac{1}{7} person/second death rate= \frac{1}{10} person/second Nate population growth rate = \frac{1}{7} - \frac{1}{10} = \frac{3}{70} person/second Time for population to growth by \frac{3}{70} person = 1 second " " " " " " 1 " = \frac{1}{\frac{3}{70}} = \frac{70}{3} \approx 23.33 second

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দুর্নীতি দমন কমিশনের সহকারী পরিচালক-১২.০৪.২০১৩

A. 0.10
B. 0.15
C. 0.20
D. 0.25

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Answer: Option B

Explanation:

প্রশ্নে বলা হচ্ছে, একটি অফিসের কর্মীদের 60% গড়ে দৈনিক এক ঘণ্টা করে গাড়িতে ভ্রমণ করে। এই 60% কর্মীর 25% আবার ট্রেনে ভ্রমণ করে। একজন কর্মীকে দৈবভাবে চয়ন করা হলে তা ট্রেনে ভ্রমণকারী হবার সম্ভাবনা কত?
ধরি, মোট কর্মী সংখ্যা 100 জন।
.:. গাড়িতে 1 ঘণ্টা ভ্রমণ করে এমন যাত্রী সংখ্যা = 60 জন
.:. ট্রেনে ভ্রমণ করে এমন কর্মীর সংখ্যা
= 60 এর 25% = 15 জন
কর্মীর ট্রেনে ভ্রমণের সম্ভাবনা = 15/100 = 0.15

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বাংলাদেশ অর্থনৈতিক অঞ্চল কর্তৃপক্ষ (সহকারী ব্যবস্থাপক) 25-09-2020

A. 200
B. 350
C. 550
D. 700

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Answer: Option C

Explanation:

Let R be the number of rented residences and O be the number of owned residences.

According to the given information, we have the ratio of rented to owned residences as 7:4:

R/O = 7/4

We are also given that there are 150 more rented residences than owned residences:

R = O + 150

Now, we can set up a system of equations to solve for R and O:

R/O = 7/4
R = O + 150
To eliminate R, we can use the second equation:

R = O + 150

Now, substitute this expression for R into the first equation:

(O + 150)/O = 7/4

Cross-multiply to solve for O:

4(O + 150) = 7O

4O + 600 = 7O

Subtract 4O from both sides:

600 = 3O

Now, divide by 3:

O = 600/3 O = 200

Now that we know the number of owned residences (O), we can find the number of rented residences (R) using the second equation:

R = O + 150 R = 200 + 150 R = 350

So, there are 200 owned residences and 350 rented residences in the town. To find the total number of residences, simply add these two numbers together:

Total = Owned + Rented Total = 200 + 350 Total = 550

Therefore, the total number of residences in the town is 550.

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বাংলাদেশ সিকিউরিটিজ অ্যান্ড এক্সচেঞ্জ কমিশন(সহকারী পরিচালক) 19-06-2021

A. 19
B. 41
C. 43
D. 51

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Answer: Option B

Explanation:

Physics takes = 120/2 = 60
Chemistry takes = 120/5 = 24
Mathematics takes = 120/7 = 17
Physics and chemistry = 120/10 = 12
Physics andmathematics = 120/14 = 8
Chemistry and mathematics = 120/35 = 3
Physics, Chemistry and mathematics = 120/70 = 1
So, Only physics and chemistry = 12 - 1 = 11
Only physics and mathematics = 8 - 1 = 7
Only Chemistry and mathematics = 3 - 1 = 2
Now, Only physics = 60 - 11 - 7 = 41
Only Chemistry = 24 - 11 - 2 - 1 = 10
Only mathematics = 17 - 7 - 2 - 1 = 7
Shortcut not taken none ofthe three = 120 - (41 + 10 + 7 + 11 + 7 + 2 + 1) = 12 - 79 = 41

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পল্লী কর্ম সহায়ক ফাউন্ডেশন সহকারী ব্যবস্থাপক ০২. ০৮.২০১৯

A. 6
B. 8
C. 11
D. 15

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Answer: Option B

Explanation:

Total - None = M + A - M∩A

⇒ 50-None = 18 + 26 - 2

⇒ None = 50 - 42

∴ None = 8

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5199 . In a class, 120 students are male and 100 students are female , 25% of the male students and 20% of the female students are engineering students . 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam ?

A. 5%
B. 10%
C. 15%
D. 22%

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Answer: Option D

Explanation:

Eng. male = 120×.25 = 30

Eng.female = 100×.20 = 20

Total eng. student = 30 + 20 = 50

Eng.male passed = 30×.20 = 6

Eng female passed = 20×.25 = 5

So, percentage passed = (6 + 5)/50×100% = 22%

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বাংলাদেশ পল্লী বিদ্যুতায়ন বোর্ড ।। সহকারী সচিব/সহকারী পরিচালক(প্রশাসন) (18-01-2019)

A. 50%
B. 60%
C. 64%
D. 65%

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Answer: Option B

Explanation:

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বাংলাদেশ তেল- গ্যাস ও খনিজসম্পদ কর্পোরেশন (পেট্রোবাংলা) || সহকারী ব্যবস্থাপক (22-11-2024) || 2024

A. 20 m
B. 22 m
C. 24 m
D. 26 m

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Answer: Option C

Explanation:

Hints: length বের করতে হবে সর্ব্বোচ্চটির থেকে। ১২ টি column থেকে প্রাথমটির আমরা double করবনা। 11 × 2 = 22, সাথে প্রতি দুই দিক থেকে 1 মিটার যোগ 22 + 2 = 24

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দুর্নীতি দমন কমিশনের সহকারী পরিচালক-১২.০৪.২০১৩

A. 209

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Answer: Option A

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Microcredit Regulatory Authority (সহকারী পরিচালক) 05-03-2021

A. 1440
B. 1800
C. 3600
D. None

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Answer: Option B

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তিতাস গ্যাস ট্রান্সমিশন অ্যান্ড ডিস্ট্রিবিউসন কো. লি.-সহকারী ব্যবস্থাপক-08-10-2021

A. 490
B. 700
C. 540
D. 640
E. 702

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Answer: Option C

Explanation:

ব্যাখ্যাঃ প্রদত্ত সমস্যাটি একটি সমন্তর ধারা । যার প্রথম পদ a = 450 , সাধারন অন্তর d = 10

সুতরাং দশম পদ = a + (10 - 1)d

= 450 + 9*10

= 540

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Bangladesh Bank - Assistant Director - 2006

A. 3.32cm.
B. 3.52cm.
C. 3.62cm.
D. 3.72cm.

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Answer: Option A

Explanation:

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তিতাস গ্যাস ট্রান্সমিসন এন্ড ডিস্ট্রিবিউশন কোম্পানী লিমিটেড (TGTDCL) || সহকারী প্রকৌশলী (EEE) (24-05-2024) || 2024

5191 . If, x - y =5, xy = 6. then x + y = ?

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5192 . In a basket the ratio of banana and apple is 3 : 2. If 5 bananas are removed from the basket then the ratio become 1 :1. How many apples were there is the basket?

5193 . In a camp, there is a meal for 120 men or 200 children. If 150 children have taken the meal, how many men will be catered to with the remaining meal?

150 children have taken meal .

5194 . In a certain country. A person is born every 7 seconds and a person dies every 10 seconds. Therefore, the birth and death rates account for a population growth rate of one person every---

5196 . In a certain town, the ratio of the number of rented residences to the number of owned residences is 7 : 4. Those are the only two kinds of residences in this town. If there are 150 more rented than owned residences in this town, what is the total number of residences in the town?

5197 . In a Class of 120 students numbered 1 to 120, all even numbered students opt for Physics , those whose numbers are divisible by 5 opt for Chemistry and those whose numbers are divisible by 7 opt for Math. How many opt for none of the three subject ?

5198 . In a class of 50 students, 18 take music, 26 take art and 2 take both music and art. How many students in the class are not enrolled in either music or art?

5200 . In a college, the ratio of foreign to local students is 3:7. If three-fourths of the local students are female and one-quarter of the foreign students are female, what fraction of the combined students is female?

5201 . In a garden, there are 10 rows and 12 columns of mango trees. The distance between two trees is 2 meters and a distance of one meter is left from all sides of the boundary of the garden. What is the length of the garden?

5202 . In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?

5203 . In a market suvey 20% respondents opted for product A whereas 60% opted for product B. the remaining individuals were not certain. If the difference in number between those who opted for product B and those who were uncertain was 720 . How many individuals were covered in the survey?

5205 . In a right angled triangle, the length of perpendicular and base are 1.8 cm and 2.5 cm respectively, then find its hypotenuse.

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