2116 . If y = ( 3x - 6 )/x, then for what values of x, y will be positive?

A. x>2 or x <0
B. x>0
C. x<0
D. -2
E. None of these

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Answer: Option A

Explanation:

সমীকরণ হতে দেখা যাচ্ছে, (x−2)/x এর ধনাত্মক মানের জন্য y এর মান ধনাত্মক হবে। এখন, (x−2)/x এর মান ঋণাত্মক হবে, যদি (i) x - 2 > 0 হয় এবং x > 0 হয় অথবা (ii) x - 2 < 0 হয় এবং x < 0 হয়।[ঋণাত্মক সংখ্যা দিয়ে ভাগ করলে ধনাত্মক সংখ্যা পাওয়া যায়]।
(i) হতে x > 2 হলে y এর মান ধনাত্মক হবে
(ii) হতে x < 0 হলে y " " " "
∴ নির্ণেয় সীমা x > 2 or x< 0

2117 . If y = (3x - 6)/x, then for what values of x, y will be positive?

A. x > 2 or x < 0
B. x > 0
C. x < 0
D. -2 < x < 2

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Answer: Option A

Explanation:

সমীকরণ হতে দেখা যাচ্ছে,
x-2/x
এর ধনাত্মক মানের জন্য y এর মান ধনাত্মক হবে। এখন,
x−2/x
এর মান ঋণাত্মক হবে, যদি (i) x - 2 > 0 হয় এবং x > 0 হয় অথবা (ii) x - 2 < 0 হয় এবং x < 0 হয়।[ঋণাত্মক সংখ্যা দিয়ে ভাগ করলে ধনাত্মক সংখ্যা পাওয়া যায়]।
(i) হতে x > 2 হলে y এর মান ধনাত্মক হবে
(ii) হতে x < 0 হলে y " " " "
∴
নির্ণেয় সীমা x > 2 or x< 0

2118 . If y = (3x-6)/ x, then for what values of x, y will be positive?

A. x>2 or x<0
B. x>0
C. x<0
D. -2
E. None of these

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Answer: Option A

Explanation:

সমীকরণ হতে দেখা যাচ্ছে,(x-2)/x এর ধনাত্মক মানের জন্য y এর মান ধনাত্মক হবে। এখন, (x-2)/x এর মান ঋণাত্মক হবে, যদি (i) x - 2 > 0 হয় এবং x > 0 হয় অথবা (ii) x - 2 < 0 হয় এবং x < 0 হয়।[ঋণাত্মক সংখ্যা দিয়ে ভাগ করলে ধনাত্মক সংখ্যা পাওয়া যায়]।
(i) হতে x > 2 হলে y এর মান ধনাত্মক হবে
(ii) হতে x < 0 হলে y " " " "
∴ নির্ণেয় সীমা x > 2 or x< 0

2119 . If y =2.5 x +4 and 15x-2 =40 then y=?

A. 36
B. 28
C. 22
D. 11

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Answer: Option D

Explanation:

15x - 2 = 40

⇨ 15x = 42

y = 2 .5x + 4

⇨ 6y = 15x + 24

⇨ 6y = 42 + 24 = 66

⇨ y = 11

প্রধান প্রশাসনিক কর্মকর্তার কার্যালয় ( প্রতিরক্ষা মন্ত্রণালয়) সহকারী পরিচালক ০৫.০৪.২০১৯

A. 246
B. 369
C. 531
D. 855

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Answer: Option B

Explanation:

2121 . If you had only one match stick and entered a COLD and DARK room, where there was an oil heater, an oil lamp and a candle , which would you light first ?

A. Oil lamp
B. Oil heater
C. Candle
D. None of these

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Answer: Option D

Explanation:

It is a simple riddle. The first thing that would be lit up was the match stick.

So the correct answer is None of these.

2122 . If you rearrange the letters "LNGEDNA" you have name of a(n)-

A. Country
B. Animal
C. City
D. Ocean

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Answer: Option A

Explanation:

Hints - LNGEDNA কে rearrange করলে পাই ENGLAND ;

যা একটি দেশের নাম।

সঠিক উত্তর - country.

Bangladesh Bank - Officer - 2015

A. 3 km
B. 5 km
C. 6 km
D. 10 km
E. None of these

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Answer: Option B

Explanation:

2124 . If |x−5|=3and|2y−1|/3=5,then|x+y| could equal each of the following EXCEPT ?

A. 6
B. 8
C. 7
D. 15

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Answer: Option B

Explanation:

2125 . If ‘x’ men can do a work in 8 days and ‘x + 4’ men can do it in 6 days, what is the value of ‘x’?

A. 4
B. 6
C. 8
D. 12

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Answer: Option D

Explanation:

Hints: x জন করে 8 দিনে

1 জন করে 8x দিনে

(x + 4) জন করে 6 দিনে

1 জন করে 6(x + 4) দিনে

এখন, 8x = 6x + 24

2x = 24

x = 12

2126 . In a company 60 percent of the male employees and 70 percent of the female employees eat only veg food. If 66 percent of all the employees eat only veg food, what is the ratio of female employees eat only veg food. what is the ratio of female employees to male employees?

A. 50
B. 60
C. 80
D. None

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Answer: Option B

Explanation:

শিল্প মন্ত্রণালয়ের অধীন বিসিআইসি | সহকারী ব্যবস্থাপক (প্রশাসন) | ০৮.১২.২০১৮

A. 45
B. 90
C. 63
D. 126

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Answer: Option C

Explanation:

required number of ways=7C5×3C2

=7×6/2 ×3

=63 ways

সমন্বিত ১০ ব্যাংক ও আর্থিক প্রতিষ্ঠান || অফিসার (জেনারেল) (08-03-2024)

A. 6
B. 8
C. 9
D. 12

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Answer: Option C

Explanation:

In second stage,

100 taka in 1 year gains 41/2 or 9/2 taka

1 taka in 1 year gains 9 /(2×100) taka

800 taka in 3 year gains = ( 9×3×800)/200 = 108 tk

In first stage,

100 taka gains 8 taka

1 taka gains 8/100 taka

150 taka gains (8×150)/100 taka = 12 taka

Now, 12 tk is gained in 1 year

108 tk is gained in = 108/12 = 9 years

পল্লী কর্ম সহায়ক ফাউন্ডেশনের অ্যাসিসট্যান্ট ম্যানেজার-০৭.০৩.২০১৪

A. 19 years
B. 29 years
C. 39 years
D. 49 years

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Answer: Option C

Explanation:

Let B's present age = x years.

Then, A's present age = (x + 9) years

∴(x+9)+10=2(x−10)⇔x+19=2x−20⇔ x=39

বিসিআইসি | সহকারী প্রকৌশলী (কমার্শিয়াল) | 10-12-2021

A. 20 m
B. 25 m
C. 22.5 m
D. 9 m

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Answer: Option A

Explanation:

Hints: Distance covered by B in 9 sec = (100/45)×9 m = 20 m

A beats B by 20 metres

2116 . If y = ( 3x - 6 )/x, then for what values of x, y will be positive?

2117 . If y = (3x - 6)/x, then for what values of x, y will be positive?

2118 . If y = (3x-6)/ x, then for what values of x, y will be positive?

2119 . If y =2.5 x +4 and 15x-2 =40 then y=?

2120 . If you add up the digits of a three-digit number you get 18. the ten's digit is twice the hundred's digit and the hundred's digit is 1/3 the unit's digit. What is the number?

2121 . If you had only one match stick and entered a COLD and DARK room, where there was an oil heater, an oil lamp and a candle , which would you light first ?

2122 . If you rearrange the letters "LNGEDNA" you have name of a(n)-

2123 . If Zara walks at 5 km/hr, she reaches the bus stop 5 minutes late and if she walks at 6 km/hr , she reaches the bus stop 5 minutes earlier . The bus stop is at a distance of -

2124 . If |x−5|=3and|2y−1|/3=5,then|x+y| could equal each of the following EXCEPT ?

2125 . If ‘x’ men can do a work in 8 days and ‘x + 4’ men can do it in 6 days, what is the value of ‘x’?

2126 . In a company 60 percent of the male employees and 70 percent of the female employees eat only veg food. If 66 percent of all the employees eat only veg food, what is the ratio of female employees eat only veg food. what is the ratio of female employees to male employees?

2127 . In boys many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?

2128 . In how many years, Tk. 150 will produce the same interest @8% Tk.800 produce in years @4.5%

2129 . In 10 years, A will be twice as old as B was 10 years ago. If A is now 9 years older than B, then the present age of B is

2130 . In a 100 m race, A covers the distance in 36 seconds and B in 45 seconds. In this race A beats B by :

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