4756 . An examiner checks 4 scripts in 5/3 hours. How many scripts can he check in 50 minutes?

A. 2
B. 21/3
C. 22/3
D. 25/6
E. None of these

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Answer: Option A

Explanation:

5/3 hours =100 minutes

So 100 minutes =4

=> 50minutes =( 50×4)/100 = 2

বাংলাদেশ গ্যাস ফিল্ড | সহকারী-ব্যবস্থাপক | 03-12-2021

A. 400m
B. 600m
C. 200m
D. 800m

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Answer: Option C

Explanation:

Let L be the length of the train, and let P be the length of the pole. We're given that the train takes 10 seconds to cross the pole and 20 seconds to cross a platform of length 200 meters.

When the train crosses the pole, it covers its own length, so we can write:

L = 10 * Train's Speed

When the train crosses the platform, it covers its own length plus the length of the platform, which is 200 meters, so we can write:

L + 200 = 20 * Train's Speed

Now, we can solve this system of equations. First, isolate Train's Speed in the first equation:

Train's Speed = L / 10

Now, substitute this expression for Train's Speed into the second equation:

L + 200 = 20 * (L / 10)

Simplify:

L + 200 = 2L

Now, subtract L from both sides:

200 = L

So, the length of the train (L) is 200 meters. Therefore, the length of the train is 200 meters.

সহকারী পরিচালক(AD) -12.11.2021

A. (x + 5)(x + 5)
B. (x - 5)(x - 5)
C. (x + 5)(x - 5)
D. x(x - 25)

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Answer: Option C

Explanation:

The area of a rectangular classroom is given as x² - 25.

To find the length and width of the room, we can look for factors of x² - 25 that can represent the length and width.

x² - 25 can be factored as the difference of squares:

x² - 25 = (x + 5)(x - 5)

সহকারী পরিচালক(AD) -12.11.2021

A. 4y + 5
B. 5y + 4
C. 4 - 5y
D. y + 5

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Answer: Option A

Explanation:

J=Y

M =4J=4Y

p=M+5= 4Y+5

4760 . If Elias makes a box every 5 minutes and Nadim takes minutes to make a box, what will be the ratio of the number of boxes produced by Elias to the number of boxes produced by Nadim if they work for 5 hours and 50 minutes?

A. 5 to 6
B. 5 to 7
C. 6 to 5
D. 7 to 5

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Answer: Option D

Explanation:

5 hrs 50 mins = 5 x 60 + 50 = 350 minutes

Salam makes = 350/5 = 70 boxes

Kalam makes = 350/7 = 50 boxes

Ratio = 70 : 50 = 7 : 5

4761 . Which of the following is the average of first five prime numbers?

A. 4.5
B. 5.6
C. 7.5
D. 8.6

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Answer: Option B

Explanation:

প্রথম পাঁচটি মৌলিক সংখ্যার গড়

= 2 + 3 + 5 + 7 + 11 /5

= 28/5

= 5.6

4762 . Club A has 20 members and Club B has 27. If a total of 42 people belong to the two clubs, how many people belong to both clubs?

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

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Answer: Option C

Explanation:

(20+27)-42 =5

4763 . Five people want to rent the last two copies of a movie. How many ways can these five people rent the two movies?

A. 10
B. 9
C. 8
D. 7

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Answer: Option A

Explanation:

Let A, B, C, D, and E represent the five people who want to rent the two movies.
List the different pairs of people to find there are 10 pairs
{AB,AC,AD,AE,BC,BD,BE,CD,CE,DE}.

4764 . x2 - 25 = 12, x + 5 = 4, x - 5 = ?

A. 2
B. 3
C. 4
D. 6

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Answer: Option B

Explanation:

X^2-25 = 12

(X+5)(X-5)=12

4(X-5)=12 [X+5=4]

X-5=12/4

X-5=3

4765 . একটি ক্ষেত্রের দৈর্ঘ্য ২ মিটার, প্রস্থ ১ মিটার ও উচ্চতা শূন্য হলে ক্ষেত্রটি কি হবে?

A. এক মাত্রিক
B. দ্বি-মাত্রিক
C. ত্রি-মাত্রিক
D. কোনটিই নয়

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Answer: Option B

Explanation:

প্রাথমিক বিদ্যালয় সহকারী শিক্ষক নিয়োগ পরীক্ষা-2024 (২য় ধাপ) (02-02-2024)

A. 8
B. 9.5
C. 3
D. 7

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Answer: Option C

Explanation:

এখানে পরবর্তী অংশে দেয়া আছে,x = 3y ,তাই প্রথম অংশে, x এর স্থলে 3y বসিয়ে সমাধান করতে হবে এভাবে >>>

x + 5y = 24

, = 3y + 5y = 24 ,

= 8y = 24 ,

y = 3

প্রাথমিক বিদ্যালয় সহকারী শিক্ষক নিয়োগ পরীক্ষা-2024 (২য় ধাপ) (02-02-2024)

A. 8
B. 4
C. 12
D. 36

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Answer: Option A

Explanation:

24 ও 64 এর গ.সা.গু = 8

24)64(2

16)24(1

8) 16(2

সহকারী পরিচালক(AD) -12.11.2021

A. 1 < x < 2
B. − 2 < x < − 1
C. − 2 < x ≤ − 1
D. 1 ≤ x ≤ 2

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Answer: Option A

Explanation:

4769 . a3 - 9 + (a + 1) রাশিটির একটি উৎপাদক হবে—

A. (a+1)
B. (a-2)
C. (a-1)
D. (a-3)

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Answer: Option C

Explanation:

বাংলাদেশ সরকারি কর্ম কমিশন || Home Economist (নিপোর্ট) (11-02-2024)

A. 12π cm3
B. 33π cm3
C. 32π cm3
D. 4π cm3

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Answer: Option A

Explanation:

সহকারী পরিচালক(AD) -12.11.2021

4756 . An examiner checks 4 scripts in 5/3 hours. How many scripts can he check in 50 minutes?

4757 . A train takes 10 seconds to cross a pole and 20 seconds to cross a platform of length 200 m. What is the length of the train?

4758 . The area of a rectangular classroom is x2 - 25 Which of the following binomials could represent the length and the width of the room?

4759 . Melissa is four times as old as Jim. Pat is 5 years older that Melissa. If Jim is y years old, how old is Pat?

4760 . If Elias makes a box every 5 minutes and Nadim takes minutes to make a box, what will be the ratio of the number of boxes produced by Elias to the number of boxes produced by Nadim if they work for 5 hours and 50 minutes?

4761 . Which of the following is the average of first five prime numbers?

4762 . Club A has 20 members and Club B has 27. If a total of 42 people belong to the two clubs, how many people belong to both clubs?

4763 . Five people want to rent the last two copies of a movie. How many ways can these five people rent the two movies?

4764 . x2 - 25 = 12, x + 5 = 4, x - 5 = ?

4765 . একটি ক্ষেত্রের দৈর্ঘ্য ২ মিটার, প্রস্থ ১ মিটার ও উচ্চতা শূন্য হলে ক্ষেত্রটি কি হবে?

4766 . যদি x + 5y = 24 এবং x = 3y হয়, তাহলে y এর মান কত?

4767 . What is the greatest common factor of 24 and 64?

4768 . x2 - 3x + 2 <0 অসমতাটির সমাধান কোনটি? —

4769 . a3 - 9 + (a + 1) রাশিটির একটি উৎপাদক হবে—

4770 . A sector of a circle of radius 5 cm is recast into a right circular cone of height 4 cm. What is the volume of the resulting cone?

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