6316 . If 2x - y = 10 and x/y = 3, then x = ?

A. a - 10
B. 2
C. 4
D. 6

View Answer	Favorite Question

Answer: Option D

Explanation:

x/y= 3
3y=x
y= x/3
এখন, 2x-y= 10
বা, 2x- x/3= 10
বা, 6x-x/3= 10
বা, 5x= 30
x= 6.

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

A. -12
B. -6
C. 6
D. 12

View Answer	Favorite Question

Answer: Option A

Explanation:

To find the value of 6y - 4x when 2x - 3y = 6, you can rearrange the first equation to isolate 2x:
2x = 6 + 3y
Now, divide both sides by 2:
x = 3 + (3/2)y
Now, you can use this expression for x to find 6y - 4x:
6y - 4x = 6y - 4(3 + (3/2)y)
Now, distribute the -4 on the right side:
6y - 4x = 6y - 12 - 6y
Now, you can see that the 6y terms cancel out:
6y - 4x = -12
So, 6y - 4x equals -12.

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

6318 . If $2^{4 y} = 256$ , then $3^{y}$ equals : ..

A. 3
B. 8
C. 9
D. 10

View Answer	Favorite Question

Answer: Option C

Explanation:

6319 . If 20% of a=b then b% of 20 is the same as

A. 4% of a
B. 20% of a
C. 5% of a
D. None of these

View Answer	Favorite Question

Answer: Option A

Explanation:

20 % of a = b

বা, a × (20/100) = b

বা, a × (1/5) = b

বা, a : b = 5 : 1

Let a = 5 and b = 1

Let b% of 20 is the same as x% of a, then

b% of 20 = x% of a

বা, 20 × (1/100) = 5 × (x/100)

বা, x = 20/5

∴ x = 4%

The correct option is 4% of a.

শিল্প মন্ত্রণালয়ের অধীন বিসিআইসি'র সহকারী ব্যবস্থাপক-০৯.১২.২০১১

A. 1260
B. 1320
C. 920
D. 1380

View Answer	Favorite Question

Answer: Option D

Explanation:

Total work time for 12 carpenters is

= 12×6×24 hours = 72×24 hours

Total work time for 18 chapter is = 18×8×36 hours = 144×36 hours

In 72×24 hours they can make 460 chairs

In 144×36 hours they can make ( 460×144×36)/(72×24) = 1380 chairs.

পল্লী কর্ম সহায়ক ফাউন্ডেশনের অ্যাসিসট্যান্ট ম্যানেজার-০৭.০৩.২০১৪

6321 . If $10^{2 y} = 25,$ then $10^{- y}$ equals: ..

A. $\frac{1}{50}$
B. $\frac{1}{625}$
C. $\frac{1}{2}$
D. $\frac{1}{5}$

View Answer	Favorite Question

Answer: Option D

Explanation:

6322 . If 1 < x < 7 and 5> y > 2 which of the following must be true?

A. x + y > 8
B. x - y > 0
C. x - 2y < 2
D. 2x - y > 1

View Answer	Favorite Question

Answer: Option D

Explanation:

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

6323 . If $\frac{0.0015 \times 10^{m}}{0.03 \times 10^{k}} = 5 \times 10^{7}$ , then m - k = ..

A. 9
B. 8
C. 7
D. 6
E. 5

View Answer	Favorite Question

Answer: Option A

Explanation:

6324 . If (6x – y, 13) = (1, 3x + 2y), then find out the value of (x, y).

A. (13, 1 )
B. (5, 1)
C. (1, 5)
D. (3,5)

View Answer	Favorite Question

Answer: Option C

Explanation:

B Unit 2020-21 || জাহাঙ্গীরনগর বিশ্ববিদ্যালয় || 2021

A. 7
B. 16
C. 12
D. 18

View Answer	Favorite Question

Answer: Option A

Explanation:

32 + 16 - 9 x 14 ÷3
= 32 ÷ 16x9 - 14 + 3
= 2x9 - 14 + 3
= 18 - 14 + 3
= 21 - 14
= 7
[এখানে, BODMAS নিয়ম প্রয়োগ করা হয়েছে।]

সোনালী ও ডিবিবিএল ব্যাংক- সিনিয়র অফিসার (আইটি) - 16.10.2020

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

View Answer	Favorite Question

Answer: Option B

Explanation:

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

A. 13
B. 12
C. -12
D. 11

View Answer	Favorite Question

Answer: Option D

Explanation:

(x+3)2=225

or, x+3=15

or, x=15-3=12

So,

x-1

=12-1

=11

(ans)

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

A. 0.16
B. 0.1633
C. 0.1667
D. 0.166

View Answer	Favorite Question

Answer: Option C

Explanation:

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

6329 . if x>0 and yx=x, , then what is the value of y in terms of x? ..

A. $\frac{1}{x}$
B. $\sqrt{x}$
C. $x \sqrt{x}$
D. $x^{3}$
E. $x^{3}$

View Answer	Favorite Question

Answer: Option D

Explanation:

To find the value of y in terms of x, let's solve the given equation:

√(y/x) = x

Squaring both sides of the equation:

y/x = x^2

Multiplying both sides by x:

y = x * x^2

Simplifying:

y = x^3

Therefore, the value of y in terms of x is x^3.

The correct answer is = x^3.

Bangladesh Bank - Assistant Director - 2011

6330 . 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%

View Answer	Favorite Question

Answer: Option A

Explanation:

6316 . If 2x - y = 10 and x/y = 3, then x = ?

6317 . If 2x - 3y = 6, then 6y - 4x = ?

6319 . If 20% of a=b then b% of 20 is the same as

6320 . If 12 carpenters, working 6 hours a day,can make 460 chairs in 24 days, how many chairs will 18 carpenters make in 36days, each working 8 hours a day?

6322 . If 1 < x < 7 and 5> y > 2 which of the following must be true?

6324 . If (6x – y, 13) = (1, 3x + 2y), then find out the value of (x, y).

6325 . If '+' means '÷' , '×' means '-' , '-' means '×' and '÷' means '+' then find the value of 32+16-9×14÷3=?

6326 . If, x - y =5, xy = 6. then x + y = ?

6327 . if(x+3)^2=225,which of the following can be the value of x-1 ?

6328 . If y exceeds x by 20%, then x is less than y by:

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