6976 . If the height of a right square pyramid is increased by 12%, by what percent must the side of the base be increased, so that the volume of the pyramid is increased by 28%?

A. 3%
B. 7%
C. 10%
D. 36%

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Answer: Option B

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

A. 12
B. 16
C. 20
D. 25
E. 50

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Answer: Option B

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জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা (NSI) - সহকারী পরিচালক (23-05-2025)

A. 7 cm
B. 9 cm
C. 10 cm
D. 14 cm

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Answer: Option D

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First Security Islami Bank Ltd | Probationary Officer | 19-02-2021

A. 52 cm

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Answer: Option A

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Microcredit Regulatory Authority (সহকারী পরিচালক) 05-03-2021

A. 23
B. 22
C. 11
D. 32

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Answer: Option A

Explanation:

(M + 2M + 3 + 3M - 5 + 5M + 1) / 4 = 63

or, (11M - 1) = 63 * 4

or, 11M = 252 + 1

or, 11M = 253

or, M = 253 / 11

or, M = 23

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কর্ণফুলী গ্যাস ডিস্ট্রিবিউশন কোম্পানী লিমিটেড || সহকারী ব্যবস্থাপক (সাধারণ) (04-12-2021) || 2021

A. P + 7
B. P + 12
C. P + 14
D. P + 25
E. None

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Answer: Option C

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

A. 4
B. 5
C. 8
D. 10

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Answer: Option A

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

A. 10 meters
B. 12 meters
C. 15 meters
D. 16 meters
E. None

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Answer: Option B

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

6984 . if sin x= $\frac{3}{4}$ , then cos x=?

A. $\frac{2}{3}$
B. $\frac{\sqrt{2}}{3}$
C. $\frac{\sqrt{7}}{4}$
D. $\frac{1}{4}$

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Answer: Option C

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বাংলাদেশ রপ্তানি প্রক্রিয়াকরণ কর্তৃপক্ষ (সহকারী ম্যানেজার) 02-04-2021 || 2021

A. Tk. 30
B. Tk. 90
C. Tk. 340
D. Tk. 400

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Answer: Option B

Explanation:

Given, Sales revenue is 400 Tk

Goods sold is tk 310 Tk

So, Gross profit is = ( 400 - 310) = 90 Tk

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তিতাস গ্যাস ট্রান্সমিশন এন্ড ডিষ্ট্রিবিউশন কোম্পানী লি. | সহকারী ব্যবস্থাপক (অ্যাকাউন্টস) | ২৭.০৪.২০১৮

A. 88
B. 123
C. 133
D. 143

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Answer: Option C

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বাংলাদেশ টেলিযোগাযোগ নিয়ন্ত্রণ কমিশন || সহকারী পরিচালক (19-02-2021)

A. 2
B. 3
C. 4
D. 5
E. 6

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Answer: Option E

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জাতীয় নিরাপত্তা গোয়েন্দা সংস্থা (NSI) - সহকারী পরিচালক (23-05-2025)

A. -22.5
B. -17.5
C. -10.5
D. 16

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Answer: Option B

Explanation:

যেহতু 1.5 সমীকরণটির একটি মূল সেহেতু ( 1.5)^2 + 1.5m + 24 = 0 2.25 + 1.5m + 24 = 0 m = - 26.25/1.5 m = - 17.5

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6989 . If one factor of $2 a^{4} - 5 a^{3} + 6 a^{2} - 5 a + 2$ is $(a - 1),$ what is the other factor?

A. $2 a^{2} - a + 2$
B. $2 a^{2} - a - 2$
C. $a - 2$
D. $a^{2} - 1$

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Answer: Option A

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6990 . if one factor of $2 a^{4} + 5 a + 2 i s (a - 1),$ what is other factor ?

A. $2 a^{2} - a + 2$
B. $2 a^{2} - a - 2$
C. $a - 2$
D. $a^{2} - 2$

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Answer: Option A

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সিকিউরিটি প্রিন্টিং কর্পোরেশন বাংলাদেশ | সহকারী ব্যবস্থাপক- 26-11-2021 || 2021

6976 . If the height of a right square pyramid is increased by 12%, by what percent must the side of the base be increased, so that the volume of the pyramid is increased by 28%?

6977 . If the distribution of movie durations is symmetric around the mean of 1.5 hours following a bell curve and if the standard deviation is 20 minutes, approximately what percentage of all movies are longer than 110 minutes?

6978 . If the difference between the circumference and diameter of a circle is 60 cm, then the radious of the circle is .

6979 . If the diagonals of a rhombus are 24cm and 10cm, what is its perimeter?

6980 . If the average of the four numbers M, 2M+3, 3M-5 and 5M+1 is 63, what is the value of M?

6981 . If the average of 7 consecutive positive odd integers is P. Then what is the average of next seven consecutive off integers in terms of P?

6982 . If the average of 5 consecutive integers is 19 then what is the difference between the least and the greatest of the 5 integers?

6983 . If the area of a right triangle is 6 square meters and the hypotenuse is 5 meters, what is the perimeter of the triangle?

6985 . If Sales Revenue is TK. 400, Cost of goods sold is TK. 310 and operating expense is TK. 60 then the Gross Profit is?

6986 . If readymade shirts need alterations 2 out of 3 in sleeves, 3 out of 4 in collar and 4 out of 5 in the body, how many alterations will be required for 60 shirts?

6987 . If p and q are positive integers and the difference between pq and ap is three times the sum of p and q then how many pairs of p and q are possible?

6988 . If one of the roots of the quadratic equation x^2+mx+24= 0 is x=1.5, then what is the value of m ?

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