6241 . 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 ?

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

পল্লী কর্ম সহায়ক ফাউন্ডেশন সহকারী ব্যবস্থাপক ০২. ০৮.২০১৯

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

6242 . In a class ,25 students play cricket ,25 play footballand 10 play both.10 play neither cricket nor football.what is the numbar of students in the class?

A. 40
B. 50
C. 60
D. 65

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Answer: Option B

Explanation:

Number of students=25+25-10+10=50.

BCSIC নিয়োগ পরীক্ষা - ২০১৮ পদ: এক্সটেনশন অফিসার তারিখ: ০৯-১১-২০১৮

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%

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

A. 30
B. 70
C. 100
D. 250

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Answer: Option B

Explanation:

\cos t = 100 p r o f i t = 320 % o f 100 = 320 s e l l i n g p r i c e = 100 + 320 = 420 N e w \cos t = 100 + (25 % o f 100) = 100 + 25 = 125 N e w p r o f i t = 420 - 125 = 295 N e w p r o f i t p e r c e n t e g = (\frac{295}{420} \times 100 %) = 70.23 % = 70 %

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

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

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

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

View Answer	Favorite Question

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

দুর্নীতি দমন কমিশনের সহকারী পরিচালক-১২.০৪.২০১৩

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

View Answer	Favorite Question

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

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

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

View Answer	Favorite Question

Answer: Option B

Explanation:

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

6249 . In the expression of ${(x - y)}^{3},$ the coefficient of $y^{2}$ is: ..

A. 1
B. 3
C. 3a
D. $- 3 a^{2}$

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Answer: Option B

Explanation:

6250 . In square ABCD below, what is the value of $\{(A C) (A D)\} / \{(A B) (D C)\} = ?$ ..

A. $\frac{1}{2}$
B. $1$
C. $\sqrt{2}$
D. $2$

View Answer	Favorite Question

Answer: Option C

Explanation:

6251 . In an acute angled traingle ABC ,if sin 2 (A + B - C) =1 and tan ( B + C-A)= $\sqrt{3},$ then the value of angle B is ..

A. 52%
B. 60=0%
C. 30%
D. 67%

View Answer	Favorite Question

Answer: Option A

Explanation:

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

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

View Answer	Favorite Question

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.

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

A. a < 0
B. b < 0
C. ab > 0
D. ab < 0
E. None

View Answer	Favorite Question

Answer: Option B

Explanation:

পায়রা বন্দর কর্তৃপক্ষ (বিভিন্ন পদ) 06-11-2020

A. 10
B. 11
C. 18
D. 20

View Answer	Favorite Question

Answer: Option D

Explanation:

From 1 to 100 there are 20 '5s' Those are 5, 15, 25, 35, 45, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 65, 75, 85, 95. TOTAL 20.NO CORRECT ANS IN OPTION.

২৮ তম বিসিএস প্রিলিমিনারি টেস্ট (28-11-2008)

6255 . If $y = 5 x^{2} - 2 x$ and x = 3, then y =? ..

A. 24
B. 27
C. 39
D. 51

View Answer	Favorite Question

Answer: Option C

Explanation:

{দেওয়া আছে, y=5x}^{2} -2x এবং x=3 {অতএব, y=5×3}^{2} -2×3 (মান বসিয়ে) = 45 - 6 = 39

6241 . 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 ?

6242 . In a class ,25 students play cricket ,25 play footballand 10 play both.10 play neither cricket nor football.what is the numbar of students in the class?

6244 . In a certain store, the profit is 320% of the cost, If the cost increases by 25% but the selling price remains constant approximately what percentage of the selling prices is the profit?

6246 . 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---

6247 . 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 .

6248 . 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?

6252 . 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?

6253 . If a2b is negative, which of the following must be true?

6254 . If you count 1 to 100, how many 5s will you pass on the way?

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