6691 . The difference between $\sqrt{150}$ and $\sqrt{54}$ is _____

A. $2 \sqrt{6}$
B. $16 \sqrt{16}$
C. $9 \sqrt{6}$
D. None of these

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Answer: Option A

Explanation:

\sqrt{150} - \sqrt{54} = 5 \sqrt{6} - 3 \sqrt{6} = 2 \sqrt{6}

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6692 . The device that exhibits negative resistance region is _____

A. TTL
B. ECL
C. CMOS
D. UJT

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Answer: Option D

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6693 . The cost of operating a Frisbee company in the first year is $10,000 plus $2 for each Frisbee. Assuming the company sells every Frisbee it makes in the first year for $7, how many Frisbees must the company sell to break even?

A. 1000
B. 1500
C. 2000
D. 2500

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Answer: Option C

Explanation:

মনেকরি, বিক্রিত Frisbee সংখ্যা = x
প্রশ্নমতে,
7x = 10000 + 2x
⇒ 7x - 2x = 10000
⇒ 5x = 10000
.:. x = 2000

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জীবণ বীমা কর্পোরেশন (সহকারী ম্যানেজার) 16-10-2020

A. 2
B. 2.5
C. 3
D. 4

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Answer: Option A

Explanation:

We know,

C = P ( 1 + r)n

So, 34347 = 30, 000 ( 1 + 7/10)n

34347/30000 = (107/100)n

1.14 = ( 1.07)n

n = 2

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পল্লী কর্ম সহায়ক ফাউন্ডেশনের অ্যাসিসট্যান্ট ম্যানেজার-০৭.০৩.২০১৪

A. 21
B. 22
C. 23
D. None

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Answer: Option D

Explanation:

The BIMSTEC Permanent Secretariat is to be established in Dhaka with first SG to be nominated by Sri Lanka. India would be contributing 32% of the cost of Secretariat reflecting its strong commitment to BIMSTEC process.

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

A. 23
B. 24
C. 25
D. None

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Answer: Option A

Explanation:

মনেকরি,
টিমের সদস্যদের বয়সের গড় x বছর
.: অধিনায়ক ও উইকেট রক্ষক বাদে অন্য 9
জনের গড় = (x - 1) বছর
দেওয়া আছে,
অধিনায়কের বয়স = 26 বছর
.:. উইকেট রক্ষকের বয়স = 26 + 3 = 29 বছর
প্রশ্নমতে,
9 (x - 1) + 26 + 29 = 11x ⇒ 9 x - 9 + 26 + 29 = 11x
⇒ x = 23

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তিতাস গ্যাস ট্রান্সমিশন অ্যান্ড ডিস্ট্রিবিউসন কো. লি.-সহকারী ব্যবস্থাপক-08-10-2021

A. 24
B. 64
C. 96
D. 192

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Answer: Option D

Explanation:

মনেকরি, আয়তক্ষেত্রের উচ্চতা = h
.:. আয়তক্ষেত্রের ভূমি = 3h
তাহলে, পরিসীমা = 2(h + 3h)
= 2 x 4h
= 8h

প্রশ্নমতে,
8h = 64
⇒ h = 8
.:. আয়তক্ষেত্রের উচ্চতা = ৪
এবং ভূমি = 3 × 8 = 24
তাহলে আয়তক্ষেত্রের ক্ষেত্রফল = ভূমি উচ্চতা
= 24 x 8 = 192

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জীবণ বীমা কর্পোরেশন (সহকারী ম্যানেজার) 16-10-2020

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

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Answer: Option C

Explanation:

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ওয়েজ আর্নার্স কল্যাণ বোর্ড || উপ সহকারী পরিচালক (22-11-2024) || 2024

A. 3
B. 2
C. 4
D. 5

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Answer: Option A

Explanation:

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বাংলাদেশ পেট্রোলিয়াম ইনস্টিটিউট (সহকারী পরিচালক) 18-12-2020 || 2020

A. A+4
B. (A+38)/12
C. 12A+4
D. A+1/3
E. None of these

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Answer: Option D

Explanation:

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

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

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Answer: Option C

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ওয়েজ আর্নার্স কল্যাণ বোর্ড || সহকারী পরিচালক (22-11-2024) || 2024

A. 10
B. 8
C. 12
D. 15

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Answer: Option C

Explanation:

Total mark of first 15 students = 15 * 10 = 150

Total mark of first 10 students = 15 * 10 = 150

Total mark of 25 students = 150 + 150 = 300

Average = 300 / 25 = 12

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Sonali-Janata-Agrani &amp-Rupali Bank Ltd. &amp-RAKUB Officer Recruitment 28.03.2008

A. 35
B. 40
C. 50
D. None

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Answer: Option B

Explanation:

Let's denote the present ages of the husband, wife, and child as H, W, and C, respectively.

According to the given information:

Four years ago, the average age of the husband, wife, and child was 27 years. So, (H - 4 + W - 4 + C - 4) / 3 = 27.

Five years ago, the average age of the wife and child was 20 years. So, (W - 5 + C - 5) / 2 = 20.

We can simplify these equations:

1. (H + W + C - 12) / 3 = 27.

2. (W + C - 10) / 2 = 20.

Now, let's solve this system of equations:

From equation 2, we can express W + C as 2 * 20 + 10 = 50.

Substitute this value into equation 1:

(H + 50 - 12) / 3 = 27.

H + 38 = 81.

H = 81 - 38.

H = 43.

So, the present age of the husband is 43 years.

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A. 22 years
B. 30 years
C. 40 years
D. 32 years

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Answer: Option D

Explanation:

Total age of 10 students = 20×10 = 200
Total age of 12students = (20 + 2)12 = 264
∴ age of 2 new students = 264 - 200 = 64
average = 64/2 = 32

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পল্লী কর্ম সহায়ক ফাউন্ডেশন সহকারী ব্যবস্থাপক ০২. ০৮.২০১৯

A. 39
B. 40
C. 45
D. 49

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Answer: Option A

Explanation:

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

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6692 . The device that exhibits negative resistance region is _____

6693 . The cost of operating a Frisbee company in the first year is $10,000 plus $2 for each Frisbee. Assuming the company sells every Frisbee it makes in the first year for $7, how many Frisbees must the company sell to break even?

6694 . The compound interest on Tk 30,000 at 7% per annum is TK.4357. The period (in years) is:

6695 . The captain of Bangladesh Cricket Team is 26 years old and the wicket keeper is 4 years older . If the ages of these two are excluded,the average age of the remaining players is one year less than the average age of the whole team . What is the average age of the team ?

6696 . The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older than him. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the team?

6697 . The base of rectangle is three times as long as the height. If the perimeter is 64, what is the area of the rectangle?

6698 . The average of x, y, z is 6 and x-y = 4, xy = 21, what is the value of z?

6699 . The average of several exam scores is 80. One make-up exam was given. Included with the other scores, the new average was 84. If the score on the make up exam was 92, how many total exams were give?

6700 . The average of a set of 12 numbers, which includes 34 is A. If 34 is included to the set, what is the average of new set of numbers in terms of A?

6701 . The average of a, b, c is 6 and a - b = 4, ab = 21, what is the value of c?

6702 . The average mark obtained by 15 students was 10 and the average mark obtained by 10 students was 15. What was the average mark obtained by all students?

6703 . The average age of husband wife and their child 4 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is:

6704 . The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the group. What is the average age of the two new students who joined the group?

6705 . The average age of 24 students in a class is 14. If the teacher's age is included, the average increases by 1. What is the age of teacher?

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