6931 . 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---

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

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6932 . 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?

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

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Answer: Option B

Explanation:

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

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

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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.

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

A. 6
B. 15
C. 20
D. 23

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Answer: Option D

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পল্লী কর্ম সহায়ক ফাউন্ডেশন সহকারী ব্যবস্থাপক ০২. ০৮.২০১৯

A. 36
B. 28
C. 42
D. 34

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Answer: Option D

Explanation:

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পায়রা বন্দর কর্তৃপক্ষ (বিভিন্ন পদ) 09-10-2020

6939 . If $x \geq 8$ and $y \leq 3$ then which of the following mustbetrue?

A. $x + y \geq 5$
B. $x + y \leq 11$
C. $x - y \leq 5$
D. $x - y \geq 5$

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Answer: Option D

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

6940 . If x> 0, $(\frac{x}{50} + \frac{x}{25}) i s w h a t p e r c e n t o f x ?$

A. 6%
B. 25%
C. 33.33%
D. 60%

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Answer: Option A

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6941 . If x=ya,y=zb and $z = x^{c}$ then abc = ?

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

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Answer: Option A

Explanation:

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6942 . If x= ${(y + 3)}^{2}$ , then which of the following will be equal to ${(- 2 y - 6)}^{2}$ ?

A. -4x
B. -2x
C. 4x
D. 2x
E. None of these

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Answer: Option C

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

6943 . If $x^{3} = 729$ then what is x?

A. 9
B. 7
C. 6
D. 16

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Answer: Option A

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6944 . If $(x^{2} - 8 x + 22) = 6$ Which of the following must be false?

A. x=4
B. x=-4
C. x>3
D. x>0

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Answer: Option D

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6945 . If $(x^{2} - 4 x + 9) = 6,$ which of the following must be false?

A. x=1
B. x=3
C. x>3
D. x>0

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Answer: Option C

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6931 . 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---

BdMerit-এর ১ বছরের প্রিমিয়াম প্যাকেজ কিনে ১০ মাস নিয়মিত প্রস্তুতি নিন—

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6932 . 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 .

6933 . 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?

6934 . 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?

6935 . If a2b is negative, which of the following must be true?

6936 . If you count 1 to 100, how many 5s will you pass on the way?

6937 . If y= kx, where k is a constant , and y= 24 when x=6, what is the value of y when x =5 ?

6938 . If y = 5x +3 and 5x + 2 = 33 then, y = ?3

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