3751 . When a positive integer m is divided by another positive integer n. the remainder obtained is 8. If m/n=89.32, What is the value of n?

A. 1
B. 25
C. 32
D. 100

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Answer: Option B

Explanation:

Given,

When a positive integer m is divided by another positive integer n, the remainder obtained is 8.

m/n = 89.32

To Find,

The value of n.

Solution,

Let's solve the question using the given details,

Both m and n are positive integers.

On dividing m/n, we got the product 89.32.

The remainder obtained is 8.

Thus, the value of the sum = 89.32

m = 89n + 0.32n

The remainder obtained = 0.32

So, the value of n

0.32n = 8

On dividing, we get,

n = 25.

The value of n is 25.

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3752 . When a student weighing 45 dgs left a class , the average weight of the remaining 59 students increased by 200g . What is the average weight of the remaining 59 students ?

A. 57 kgs
B. 56.8 kgs
C. 58.2 kgs
D. 52.2 kgs
E. None of these

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Answer: Option A

Explanation:

Let, Average weight of 59 students = x kg

Total weight of 59 students = 59x

Total weight of 60 students = (59x + 45)

Average weight of 60 students = ( 59x + 45)/60

x - ( 59x - 45)/60 = 200/1000

( 60x - 59x - 45) /60 = 1/5

5x - 225 = 60

x = 285 /5 = 57kgs.

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Bangladesh Bank - Assistant Director - 2009

A. 57 kgs
B. 56.8 kgs
C. 58.2 kgs
D. 52.2 kgs

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Answer: Option A

Explanation:

Let, Average weight of 59 students = x kg

Total weight of 59 students = 59x

Total weight of 60 students = (59x + 45)

Average weight of 60 students = ( 59x + 45)/60

x - ( 59x - 45)/60 = 200/1000

( 60x - 59x - 45) /60 = 1/5

5x - 225 = 60

x = 285 /5 = 57kgs

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3754 . When an object is sold for Tk.250, the seller makes 25% profit. What waas the cost price of the object?

A. 125
B. 150
C. 200
D. 300

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Answer: Option C

Explanation:

Profit=250*25/125

=50 tk.

Now, Cost Price=(250-50) or, 200tk.

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Bangladesh Bank - Assistant Director - 2008

A. 96 sq-in
B. 48 sq-in
C. 48 in
D. 46 in

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Answer: Option B

Explanation:

area of triangle = ½ * base*height

= ½*12*8

= 96/2 = 48 sq-in (Ans)

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

A. 7744
B. 5808
C. 1936
D. 3872

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Answer: Option C

Explanation:

When a wire is bent in the form of a circle with a radius of 28 cm, its circumference is given by the formula:

Circumference of circle = 2 * π * radius

Circumference = 2 * π * 28 cm = 56π cm

Now, if the same wire is bent in the form of a square, the perimeter of the square will be equal to the circumference of the circle, which is 56π cm.

The perimeter of a square is given by:

Perimeter of square = 4 * side

So, in this case:

4 * side = 56π

Divide both sides by 4:

side = (56π) / 4 = 14π cm

Now, to find the area of the square, we square the length of one side:

Area of square = side^2 = (14π)^2 = 196π^2 cm²

To get the numerical value, we can approximate π as approximately 3.14:

Area ≈ 196 * (3.14)^2 ≈ 1936 cm²

So, the area of the square formed by the wire when bent is approximately 1936 cm².

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সমন্বিত ৭ ব্যাংক ও ১টি আর্থিক | সিনিয়র_অফিসার | 27-11-2021

A. 500cm
B. 5cm
C. 0.97cm
D. 1.97cm

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Answer: Option A

Explanation:

0.2% = 1cm

1% = 1/0.2%cm

100% = ( 1 * 100% ) /0.2% cm = 500cm

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Bangladesh Bank - Assistant Director - 2010

A. 44
B. 66
C. 42
D. 84

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Answer: Option B

Explanation:

ধরি, সংখ্যাটি ক,

সুতরাং,

(১/৩*ক)+৬=২৮

(ক+১৮)/৩=২৮

ক+১৮=৮৪

ক=৬৬(উত্তর)

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Bangladesh Bank - Assistant Director - 2008

A. 15
B. 20
C. 40
D. 25

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Answer: Option C

Explanation:

Here, divident is m, divisor is n, quotient is 112 and remainder is 6.

Again, m/n = 112.15 or, m = 112.15n

Now, divident = divisor x quotient + remainder

or, m = n x 112 + 6

or, 112.15n = 112n + 6

or, 112.15n - 112n = 6

or, 0.15n = 6

or, n = 40

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3760 . When squared value of a number is subtracted from 5 times of a number, the result is 6. What is the number?

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)

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3761 . When the diameter of a circle is trebled , the area is multiplied by how many times ?

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

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Answer: Option C

Explanation:

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Bangladesh Bank - Assistant Director - 2015

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

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Answer: Option C

Explanation:

কোন বৃত্তের ব্যাস ( diameter) 3 গুন বৃদ্ধি করলে ক্ষেত্রফল বৃদ্ধি পাবে ( 3) 2 = 9 গুন।

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3763 . When the numerator of a fraction increases by 4, the fraction increases by 2/3. The denominator of the fraction is:

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

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Answer: Option D

Explanation:

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3764 . When the positive integer n is divided bu 18, the remainder is 7. What is the remainder when n is divided by 6?

B. 1
C. 2
D. cannot be deternined

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Answer: Option B

Explanation:

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3765 . When the positive integer n is divided by 18, this remainder is 7. What is the remainder when n is divided by 6?

A. 1
B. 3
C. 2
D. 5

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Answer: Option A

Explanation:

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বিমান বাংলাদেশ এয়ারলাইন্স লিঃ নিয়োগ পরীক্ষা-২০১৮। গ্রাউন্ড সার্ভিস অ্যাসিসটেন্ট। ১৩.১০.২০১৮

3751 . When a positive integer m is divided by another positive integer n. the remainder obtained is 8. If m/n=89.32, What is the value of n?

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3752 . When a student weighing 45 dgs left a class , the average weight of the remaining 59 students increased by 200g . What is the average weight of the remaining 59 students ?

3753 . When a student weighting 45 kgs left a class, the average weight of the remaining 59 students increased by 200g. What is the average weight of the remaining 59 students?

3754 . When an object is sold for Tk.250, the seller makes 25% profit. What waas the cost price of the object?

3755 . When base is 12 inch and height is 8 inch of a triangle, its area?

3756 . When bent in the form of a circle a wire has a radiud of 28 cm. If it is bent int he form of a square. what will be its area in cm?

3757 . When heated an iron bar expands 0.2% . If the increased length is 1cm , what is the original length of the bar ?

3758 . When number 6 is added to 1/3 of a number, the result is 28. What is that number?

3759 . When positive integer m is divided by positive integer n, the remainder is 6. If m/n = 112.15 what is the value of n?

3760 . When squared value of a number is subtracted from 5 times of a number, the result is 6. What is the number?

3761 . When the diameter of a circle is trebled , the area is multiplied by how many times ?

3762 . When the diameter of a circle is tripled, the are of the circle will be increased by how many times?

3763 . When the numerator of a fraction increases by 4, the fraction increases by 2/3. The denominator of the fraction is:

3764 . When the positive integer n is divided bu 18, the remainder is 7. What is the remainder when n is divided by 6?

3765 . When the positive integer n is divided by 18, this remainder is 7. What is the remainder when n is divided by 6?

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