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

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

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

0.2% = 1cm

1% = 1/0.2%cm

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

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Bangladesh Bank - Assistant Director - 2010

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

View Answer	Favorite Question	Report

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.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

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

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

View Answer	Favorite Question	Report

Answer: Option B

Explanation:

area of triangle = ½ * base*height

= ½*12*8

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

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

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

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

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Profit=250*25/125

=50 tk.

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

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Bangladesh Bank - Assistant Director - 2008

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

View Answer	Favorite Question	Report

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

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

231 . 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

View Answer	Favorite Question	Report

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.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Bangladesh Bank - Assistant Director - 2009

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

View Answer	Favorite Question	Report

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.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

সহকারী পরিচালক(AD) -12.11.2021

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

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

234 . When a commodity is sold for Tk. 34.80, there is a loss of 2%. What is the cost price of the commodity ?

A. Tk. 26.10
B. Tk. 43
C. Tk. 43.20
D. Tk. 46.40
E. 35.51

View Answer	Favorite Question	Report

Answer: Option E

Explanation:

Hints : Sell price = 34.80; loss = 2%

Cost price = 100 × 34.80/98 = 35.51 TK

[NOTE : Correct answer TK. 35.51 ]

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

235 . When a certain number is divided by 7 ,the remainder is 0. if the remainder is not 0 when the number is not 0 when the number is divided by 14 , then the remainder must be -

A. 7
B. 5
C. 3
D. 8

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

The number should be multiple of 7

Let, the number be 21

Now, (21/7) = 3, reminder 0

And (21/14) = 1, reminder 7.

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Officer (General) |-Sonali | Janata | Bangladesh Krishi_Bangladesh Development bank ২৪.০৫.২০১৯

A. 1
B. 2
C. 4
D. 7

View Answer	Favorite Question	Report

Answer: Option D

Explanation:

The number should be multiple of 7

Let, the number be 21

Now, (21/7) = 3, reminder 0

And (21/14) = 1, reminder 7

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

237 . When a 2-digit number is divided by the sum of its digits, the quotient is 4. If the digits are reversed, the new number is 6 less than twice the original. The number is:

A. 12
B. 21
C. 42
D. 24

View Answer	Favorite Question	Report

Answer: Option D

Explanation:

Here, Only Option (a) and (d) Satisfy the First Condition.

Then, 24 after reversing its digit=42, which is 6 less than 24
×
×
2 = 48

S, 24 is the Number (Ans)

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

One Bank Ltd || Special Cadre Officer (03-01-2025) || 2025

A. 12
B. 14
C. 16
D. 18

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

ধরি,গ্যাসোলিন ট্যাংকের ধারণ ক্ষমতা, ক গ্যালন

প্রশ্নমতে, ৫ক/৮ - ক/৪ = ৬

বা, ৫ক-২ক/৮ = ৬

বা ৩ক= ৮×৬

বা, ক = ৮×৬/৩

বা, ক= ১৬

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

Three Combined Bank Recruitment - Senior Officer 03 .08.2018 ||

239 . When $\frac{5}{x} = 3$ and $\frac{y}{6} = 2$ then $\frac{3 + y}{x + 5} = ?$

A. 9/4
B. 3/11
C. 9/6
D. 11/3

View Answer	Favorite Question	Report

Answer: Option A

Explanation:

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

SBAC Bank PLC || Trainee Junior Officer (28-09-2024) ||

A. 15
B. 12
C. 9
D. 6
E. None of them

View Answer	Favorite Question	Report

Answer: Option C

Explanation:

Let, the number = P

5+P/3 = 8

15+P = 24

P = 9 (Ans

Wrong Question

Wrong Answer

Wrong Question Spelling

Wrong Answer Spelling

Wrong Explanation

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

227 . 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?

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

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

230 . 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?

231 . 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 ?

232 . 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?

233 . When a meeting of a committee was over every member shook hands with one another & the total number of handshske was 6. How many members were there in the meeting?

234 . When a commodity is sold for Tk. 34.80, there is a loss of 2%. What is the cost price of the commodity ?

235 . When a certain number is divided by 7 ,the remainder is 0. if the remainder is not 0 when the number is not 0 when the number is divided by 14 , then the remainder must be -

236 . When a certain number is divided by 7, the remainder is 0. But the remainder is not 0 if the number is devided by 14, what is the number?

237 . When a 2-digit number is divided by the sum of its digits, the quotient is 4. If the digits are reversed, the new number is 6 less than twice the original. The number is:

238 . when 6 gallons of gasoline are put into a car, the indicator goes from 1/4 to 5/8 . what is the total capacity of the gasoline tank?

240 . when 5 is added to 1 /3 of a number, the result is 8. what is the number?

কোর্স ক্যাটাগরি

প্রয়োজনীয় লিঙ্ক