7066 . if(x+3)^2=225,which of the following can be the value of x-1 ?

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

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Answer: Option D

Explanation:

(x+3)2=225

or, x+3=15

or, x=15-3=12

So,

x-1

=12-1

=11

(ans)

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

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

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Answer: Option C

Explanation:

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

7068 . 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. $x^{3}$

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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.

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Bangladesh Bank - Assistant Director - 2011

A. 5
B. 9
C. 15
D. 18

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Answer: Option B

Explanation:

To find how long it would take for Michael and Emon to shovel the snow together, you can use the concept of their combined work rates.

Let M be Michael's work rate (driveways per minute) and E be Emon's work rate (driveways per minute).

Michael can shovel one driveway in 12 minutes, so his work rate is:

M = 1 driveway / 12 minutes = 1/12 driveways per minute

Emon can shovel one driveway in 36 minutes, so his work rate is:

E = 1 driveway / 36 minutes = 1/36 driveways per minute

When they work together, their combined work rate is the sum of their individual work rates:

Combined Work Rate = M + E = (1/12 + 1/36) driveways per minute

Now, find a common denominator to add the fractions:

Combined Work Rate = (3/36 + 1/36) driveways per minute = 4/36 driveways per minute

Simplify the fraction:

Combined Work Rate = 1/9 driveways per minute

Now that you know their combined work rate, you can calculate how long it would take for them to shovel one standard driveway together:

Time = 1 driveway / Combined Work Rate = 1 / (1/9) = 9 minutes

So, it would take Michael and Emon 9 minutes to shovel all the snow of a standard driveway together.

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

7070 . If f is a function defined from R is given by f (x) = 3x -5, then $f^{- 1} (x)$ is given by :

A. 1/(3x-5)
B. (x +5)/3
C. does not exist since it is not a bisection
D. (3x + 5)/3

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Answer: Option B

Explanation:

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Assit. Programmer | Sonali Bank- Rubali Bank- BD Krishi Bank - 16.11.2018

A. 24 : 25
B. 25 : 24
C. 3 : 2
D. None of these

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Answer: Option B

Explanation:

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পল্লী বিদ্যুতায়ন বোর্ড সহকারী সচিব/সহকারী পরিচালক(প্রশাসন)-২৮.০৬.২০১৩

A. 4
B. 6
C. 9
D. 12

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Answer: Option D

Explanation:

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বাংলাদেশ সিকিউরিটিজ অ্যান্ড এক্সচেঞ্জ কমিশন(ব্যক্তিগত কর্মকর্তা) 19-06-2021 || 2021

A. 6
B. 3
C. 9
D. 12

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Answer: Option A

Explanation:

প্রতি ১২ ঘন্টায় ঘন্টায় কাঁটা ১ টি rotation সম্পন্ন করে।

৭২ ঘন্টায় ঘড়িটি ৭২/১২ টি বা ৬ টি rotation সম্পন্ন করে।

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বিদ্যুৎ- জ্বালানি ও খনিজ সম্পদ মন্ত্রণালয় || নর্দান ইলেকট্রিসিটি সাপ্লাই কোম্পানি পিএলসি || সাব-স্টেশন অ্যাটেনডেন্ট (27-01-2024)

A. 10
B. 5
C. 4
D. 3

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Answer: Option C

Explanation:

গণিতের পরিভাষায় মৌলিক সংখ্যা (অথবা মৌলিক) হল এমন স্বাভাবিক সংখ্যা যার কেবলমাত্র দুটো পৃথক উৎপাদক আছে: ১ এবং ঐ সংখ্যাটি নিজে। ১ এর চেয়ে বড় যে সকল সংখ্যা মৌলিক না তাদেরকে যৌগিক সংখ্যা বলে। অর্থাৎ যে সংখ্যাকে অন্য কোন সংখ্যা দ্বারা ভাগ করা যায় না, তাকে মৌলিক সংখ্যা বলে।

1 থেকে 10 পর্যন্ত মৌলিক সংখ্যা 4 টি যথা- ২, ৩, ৫, ৭

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

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

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Answer: Option B

Explanation:

between 45 and 72 prime numbers are = 47, 53, 59, 61, 67, 71

so, there are 6 prime numbers between 45 and 72

ans : 6

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Sonali- Janata- Agrani &amp- Rupali Bank Ltd. Senior Officer Recruitment 14.03.2008

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

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Answer: Option B

Explanation:

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C ইউনিট ব্যবসা শিক্ষা (২০২৩-২০২৪) || (09-03-2024) || চট্টগ্রাম বিশ্ববিদ্যালয়

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

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Answer: Option C

Explanation:

The first positive integer that has a remainder of 2 when divided by 13 is 2. The greatest positive integer less than 100 that has a remainder of 2 when divided by 13 is 93.

So, the total number of numbers that have a remainder of 2 when divided by 13 is (93 - 2)/13 + 1 = 7 + 1 = 8.

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

A. 6
B. 8
C. 10
D. 20
E. None

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Answer: Option D

Explanation:

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

A. 712
B. 512
C. 175
D. 676

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Answer: Option D

Explanation:

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

A. Daniil Medvedev
B. Dominic Thiem
C. Novk Djokovie
D. Roger Federer

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Answer: Option A

Explanation:

সুইজারল্যান্ডের মোট ২৬টি ক্যান্টন রয়েছে। ঐতিহাসকি কনফেডারেশনের সময় এর প্রতিটি স্বাধীন রাষ্ট্র ছিল যাদের পৃথক সীমানা ও রাষ্ট্রব্যবস্থাও ছিল। বর্তমানে এর সবগুলো সুইজারল্যান্ড যুক্তরাষ্ট্রের অন্তর্ভুক্ত ।

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বাখরাবাদ গ্যাস ফিল্ড লি. || সহকারী ব্যবস্থাপক (সাধারণ) (16-10-2021)

7066 . if(x+3)^2=225,which of the following can be the value of x-1 ?

7067 . If y exceeds x by 20%, then x is less than y by:

7069 . If Michael can shovel all the snow of a standard driveway in 12 minutes, and Emon can shovel all the snow of a standard driveway in 36 minutes, then working together, how many minutes would it take for them both to shovel all the snow of a standard driveway?

7071 . If A : B = 5 : 4 and A : C = 6 : 5, then C : B = what?

7072 . How much is 80% of 40 is greater than 4/5 of 25?

7073 . How many rotations will the hour hand of a clock complete in 72 hours?

7074 . How many prime numbers are there from 1 to 10?

7075 . How many prime numbers are there between 45 and 72?

7076 . How many prime numbers are there between 1 to 11?

7077 . How many positive integers less than 100 have a remainder of 2 when divided by 13?

7078 . How many liters of water must be evaporated from 50 liters of a 3% sugar solution to get a 5% sugar solution?

7079 . How many freedom fighters received gallantry awards for contributions in our Liberation War-1971?

7080 . How many custons (states) are there men's single title?

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