1681 . the selling price of 15 items equals the coast of 20 items.what is the percentage profit earnd by the seller?

A. 15%
B. 20%
C. 25%
D. 33.33%

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Answer: Option D

Explanation:

20 - 15 = 5 item
So,the percentage profit earned is 5/15x100 = 33.3%

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

A. 7
B. 25
C. 65
D. 91

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Answer: Option D

Explanation:

x + y = 7

x2 + y2 = 25

(x + y)2 - 2xy = 25

7x2 - 2xy = 25

2xy = 24

xy = 12

x3 + y3 = ( x + y)3 - 3xy ( x + y)

= 73 - 3×12×7

= 343 - 252

= 91

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

A. 8
B. 10
C. 12
D. 14

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Answer: Option C

Explanation:

Let's use algebra to solve this problem. Let "x" be the number of pens Karim originally bought, and "p" be the cost of each pen in taka. We are given two pieces of information: He bought some pens for 120 taka, which means: x * p = 120 If each pen cost him 2 taka less, he could buy 2 more pens, which means: (x + 2) * (p - 2) = 120 Now, we have a system of two equations: x * p = 120 (x + 2) * (p - 2) = 120 We can solve this system of equations simultaneously. Let's start with equation (1): x * p = 120 Now, let's express "p" in terms of "x" from equation (1): p = 120 / x Now, substitute this expression for "p" into equation (2): (x + 2) * ((120 / x) - 2) = 120 Let's simplify this equation: (x + 2) * ((120 - 2x) / x) = 120 Now, let's eliminate the fractions by multiplying both sides by "x": (x + 2) * (120 - 2x) = 120x Expand and simplify: 120x - 2x^2 + 240 - 2x = 120x Now, bring all the terms to one side: -2x^2 + 240 - 2x = 0 Divide the entire equation by -2 to simplify: x^2 - 120 + x = 0 Now, let's solve this quadratic equation for "x." We can use the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a) In this case, a = 1, b = -120, and c = 1. Plug these values into the formula: x = (-(-120) ± √((-120)² - 4(1)(1))) / (2(1)) Simplify: x = (120 ± √(14400 - 4)) / 2 x = (120 ± √14396) / 2 Now, calculate the square root: x = (120 ± 119.997) / 2 Now, consider both the positive and negative roots: x = (120 + 119.997) / 2 ≈ 119.998 / 2 ≈ 59.999 (approximately 60) x = (120 - 119.997) / 2 ≈ 0.003 / 2 ≈ 0.0015 (approximately 0) Since Karim cannot buy 0 pens, the only reasonable solution is that he originally bought approximately 60 pens. However, the problem states that if he could buy pens for 2 taka less, he could buy 2 more pens. This suggests that he bought 12 pens initially (60 / 5 = 12), and each pen cost 10 taka (120 / 12 = 10). So, Karim initially bought 12 pens.

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

A. 570
B. 680
C. 1020
D. none

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Answer: Option D

Explanation:

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

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

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Answer: Option B

Explanation:

5x-x²=6

or, x(5-x)=6

or, x²-5x+6=0

or, x(x-2)-3(x-2)=0

or, (x-2)(x-3)=0

So, x=2,3 [3 isn't in the options]

(ans)

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

A. 3h
B. 3.30h
C. 5h
D. 4.40h

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Answer: Option D

Explanation:

7 workers take 480 mins

So,

12 workers will take

=(7×480)/12

=280mins

=4.40 h (ans)

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

A. ৮০
B. ৮৮
C. ৯০
D. ১৯৬

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Answer: Option B

Explanation:

2πr

=2×3.1416×14

≈88 cm

(ans)

বাংলাদেশ পরমাণু শক্তি কমিশন || একাউন্টস এসিস্ট্যান্ট (2018)

A. ১৮°
B. ২৫২°
C. ২৮৮°
D. ১০৮°

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Answer: Option D

Explanation:

দুটি কোণের সমষ্টি ১৮০° হলে একটি অপরটির সম্পূরক

So, 180-108=72°

(ans)

বাংলাদেশ পরমাণু শক্তি কমিশন || একাউন্টস এসিস্ট্যান্ট (2018)

A. ২১০০
B. ২২০০
C. ২১৫০
D. ২০৫০

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Answer: Option B

Explanation:

I=p(1+r)^n

=2000(1+10/100)¹

=2200 taka

(ans)

বাংলাদেশ পরমাণু শক্তি কমিশন || একাউন্টস এসিস্ট্যান্ট (2018)

A. 39
B. 40
C. 41
D. 42

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Answer: Option C

Explanation:

1 + 5 + 9 . . . . . + 81 ধারাটির n তম পদ=a+ (n - 1) d \Rightarrow 81 = 1 + (n - 1) 4 \Rightarrow 81 = 1 + 4 n - 4 \Rightarrow 81 + 3 = 4 n \Rightarrow 4 n = 84 ∴ n = 21 ∴ সমষ্টি = \frac{21}{2} \{2.1 + (21 - 1) 4\} = \frac{21}{2} (2 + 80) = \frac{21}{2} ×82 =21×41=861 সুতরাং গড়= \frac{861}{21} =41

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

A. 45 deg
B. 22.5 deg
C. 65.5 deg
D. 85 deg

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Answer: Option C

Explanation:

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

A. 12
B. 13
C. 15
D. 20

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Answer: Option A

Explanation:

36 = 1×36

= 2×18

= 3×12

= 4×9

= 6×6

সংখ্যা দুটির যোগফল = 6 + 6 = 12

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

A. 15/8
B. 17/5
C. 36/7
D. 65/8

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Answer: Option D

Explanation:

x + \frac{1}{x} = \frac{x^{2} + 1}{x} = \frac{8^{2} + 1}{8} = \frac{65}{8}

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

A. 20
B. 30
C. 40
D. 60

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Answer: Option D

Explanation:

Let's call the capacity of the tank "C" liters. Initially, the tank is 40% full of water, which means it contains 0.4C liters of water. When 9 liters of water are removed, it becomes 1/4 full, which means it contains (1/4)C liters of water. We can set up an equation using this information: 0.4C - 9 = (1/4)C Now, let's solve for C: 0.4C - 9 = (1/4)C Multiply both sides of the equation by 4 to eliminate fractions: 1.6C - 36 = C Subtract C from both sides: 0.6C - 36 = 0 Now, add 36 to both sides: 0.6C = 36 Finally, divide by 0.6 to find the capacity of the tank: C = 36 / 0.6 = 60 So, the capacity of the tank is 60 liters.

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

A. r
B. 2r
C. 2n
D. m-mr

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Answer: Option B

Explanation:

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

1681 . the selling price of 15 items equals the coast of 20 items.what is the percentage profit earnd by the seller?

1682 . if x+y=7 and x^2+y^2 =25 then which of the following equals the value of x^3+y^3 ?

1683 . karim has brought some pens for 120 taka.if each pencoast him 2 taka less then he could buy 2 more pens.how many pens did he buy?

1684 . a complets a job in 6 days,c in 20 days and d in 24 days if taka 8670 is to be devided among them, then b will get how much more than c?

1685 . when squared value of a number is subtracted from 5 times of a number the result is 6.what is the number?

1686 . if 7 workers can assemble a car in 8 hours, how long would it take 12 workers to assemble the same car?

1687 . ১৪ সেমি. ব্যাসার্ধের বৃত্তের পরিধি কত সেমি. ?

1688 . নিন্মের কোণগুলোর মধ্যে কোনটি ৭২° কোণের সমপূরক?

1689 . আলম সাহেব বার্ষিক ১০% মুনাফায় ব্যাংকে ২০০০ টাকা জমা রাখলেন। প্রথম বছরান্তে চক্রবৃদ্ধি মূলধন কত টাকা হবে?

1690 . what is the avareage of series 1,5,9,---,81 ?

1691 . if A B C D and E are points in a plane such that the line CD bisects angle ACb and line CB bisects right angle ACE ,then DCE=?

1692 . which one of following is the minimum value of the sum of two integer whose product is 36

1693 . which one of the following fraction is a result of the sumof an intiger and its reciprocal?

1694 . a tank 40% is full of water ,if 9 liters water is removed the tank become 1/4 full what is the capacity of tank of watera/

1695 . the reminder when the posetive inteser mis divided by n is r. what is the reminder when 2m is devided by 2n

কোর্স ক্যাটাগরি

প্রয়োজনীয় লিঙ্ক

1681 . the selling price of 15 items equals the coast of 20 items.what is the percentage profit earnd by the seller?

1682 . if x+y=7 and x^2+y^2 =25 then which of the following equals the value of x^3+y^3 ?

1683 . karim has brought some pens for 120 taka.if each pencoast him 2 taka less then he could buy 2 more pens.how many pens did he buy?

1684 . a complets a job in 6 days,c in 20 days and d in 24 days if taka 8670 is to be devided among them, then b will get how much more than c? ​

1685 . when squared value of a number is subtracted from 5 times of a number the result is 6.what is the number?

1686 . if 7 workers can assemble a car in 8 hours, how long would it take 12 workers to assemble the same car?

1687 . ১৪ সেমি. ব্যাসার্ধের বৃত্তের পরিধি কত সেমি. ?

1688 . নিন্মের কোণগুলোর মধ্যে কোনটি ৭২° কোণের সমপূরক?

1689 . আলম সাহেব বার্ষিক ১০% মুনাফায় ব্যাংকে ২০০০ টাকা জমা রাখলেন। প্রথম বছরান্তে চক্রবৃদ্ধি মূলধন কত টাকা হবে?

1690 . what is the avareage of series 1,5,9,---,81 ?

1691 . if A B C D and E are points in a plane such that the line CD bisects angle ACb and line CB bisects right angle ACE ,then DCE=?

1692 . which one of following is the minimum value of the sum of two integer whose product is 36

1693 . which one of the following fraction is a result of the sumof an intiger and its reciprocal?

1694 . a tank 40% is full of water ,if 9 liters water is removed the tank become 1/4 full what is the capacity of tank of watera/

1695 . the reminder when the posetive inteser mis divided by n is r. what is the reminder when 2m is devided by 2n

1684 . a complets a job in 6 days,c in 20 days and d in 24 days if taka 8670 is to be devided among them, then b will get how much more than c?