Dutch Bangla Bank Ltd, PO 2015

৭০ টি প্রশ্ন

টপিক তালিকা

একই বিষয়ের সব টপিক

If a and b are both even numbers, which of the following COULD be odd integer?

ক) (a+1)2 + (b+1)2 খ) [(a+1)×(b+1)]-1 গ) (a+1)/(b+1) ঘ) None of these

ব্যাখ্যা (Explanation)

if a is even, a+1 will be odd

same way, b+1 will be odd too

only Odd multiplied by odd generated an odd number.

example 7*9 = 63

The ratio of girls to boys in a class 3 : The number of students in the class could not be any of the following except:

ক) 36 খ) 28 গ) 48 ঘ) None of these

ব্যাখ্যা (Explanation)

3*4 + 4*4 = 12 + 16 = 28

If (4x-7) < (2x+13), then which of the following must be true?

ক) x>9 খ) x< 13 গ) x<7 ঘ) None of these

ব্যাখ্যা (Explanation)

(4x-7) < (2x+13)

4x - 2x < 13+7

2x < 20

x < 10

Now,

x>9 would allow x to be 11 or higher, which it cannot be.

x<13 would also allow x to be 11 or higher, which it cannot be.

but x<7 has no values of x in it, which cannot be expressed in the original expression "x<10"

If 0 ≤ x ≤ 4 and y <12, which of the following CANNOT be the value of xy?

ক) -2 খ) 24 গ) 48 ঘ) None of these

ব্যাখ্যা (Explanation)

for xy to be 48,

x has to be 4, which it can,

y has to be 12, which it cannot (y <12)

(3x-1) ≠ 2x is true for all the values of x EXCEPT-

ক) X ≠ 1 খ) x = -1 গ) x =1 ঘ) None of these

ব্যাখ্যা (Explanation)

(3x-1) ≠ 2x

or, 3x - 2x ≠ 1

or, x ≠ 1

thus, x=1 can never be true here

If the coordinates of A and B are (4,1) and (-2, 7) respectively then the coordinates of the midpoint of AB are:

ক) (1, 4) খ) (-3, 4) গ) (-1, 4) ঘ) None of these

ব্যাখ্যা (Explanation)

formula:

Mid point: {X,Y} = {(x1 + x2)/2, (y1 + y2)/2}

= {(4-2)/2, (1+7)/2}

= (1, 4)

If a number exceeds another number by 13 and the larger number is 5 times the smaller number, then the smaller number is:

ক) 13 খ) 26 গ) 31 ঘ) None of these

ব্যাখ্যা (Explanation)

let larger number = x

and smaller number = y

Now,

x - y = 13 ....... (1)

1.5*y = x ............ (2)

From (1) and (2),

1.5y - y = 13

0.5y = 13

y/2 = 13

y = 26

Mahfuz has a total of to 480 in the denominations of one Taka, five taka and Ten taka. The numbers of different notes are equal. What is the total number of notes?

ক) 45 খ) 75 গ) 90 ঘ) None of these

ব্যাখ্যা (Explanation)

Let number of notes of each denomination be x.

Then x + 5x + 10x = 480

16x = 480

x = 30.

Hence, total number of notes = 3x = 90.

In one year, the population of a city increased by 20%. The next year, it decreased by 10%. What was the percentage increase in the population over the two years?

ক) 8 খ) 10 গ) 15 ঘ) None of these

ব্যাখ্যা (Explanation)

if In year 1 population is 100

in year 2, population is 120

Now, in year 3,

10% decrease means,

if population was 100, it decreased by to 90

if population was 1, it decreased by to 90/100

if population was 120, it decreased by to 90*120/100 = 108

Thus, increase in population from year 1 = 108 - 100 = 8

প্রথম ৩০টি প্রশ্নের ব্যাখ্যা ওয়েবসাইটে; সবগুলোর সম্পূর্ণ ব্যাখ্যা পেতে অ্যাপ ইন্সটল করুন।

অ্যাপ ইন্সটল করুন

The ratio of the number of boys and girls in a school is 3:2. If 20% of the boys and 25% of the girls are scholarship holders, what percent of the students are not scholarship holders?

ক) 56 খ) 70 গ) 78 ঘ) None of these

Two circular dials of exactly the same size are mounted on a wallside by side in such a way that their perimeters touch at one point. Dial 1, which is on the left, spins clockwise around its center, and dial 2, which is on the right, spins counterclockwise around its center. (Assume that there is no friction at the point of contact between the dials). Each dial is marked on its perimeter at three points that are at equal distances around the perimeter from each other. Going clockwise on each dial the points marked on dial 1 are N, O and P, and the points marked on dial 2 are X, Y and Z. If points O and Z are just meeting at the point of contact between the dials, and if dial 1 spins at the same speed as dial 2, what is the smallest number of revolutions of each dial that will bring O and Z together again?

ক) 1 খ) 2 গ) 3 ঘ) 4

A salesman travels a distance of 70 miles in 5 hours. How much faster, in miles per hour, must he travel to make the same trip in 75 hours less than the original time?

ক) 28 খ) 24 গ) 12 ঘ) None of these

ব্যাখ্যা (Explanation)

The salesman has to make it in (2.5 - 0.75)hrs = 1.75 hours

Now, Original speed, s = 70/2.5 = 28 miles/hr

Now,

with the changed time,

changed speed, S' = distance/ changed time

S' = 70/1.75 = 40 mile/hr

Now,

change from the original speed = 40 - 28 = 12 mile/hr

The effective speed of a boat travelling downstream is 20 kmph, whereas it is 10 kmph upstream. What is the speed of the stream current in kmphr?

ক) 3 খ) 4 গ) 5 ঘ) None of these

ব্যাখ্যা (Explanation)

let,

boat speed = x

stream speed = y

Thus,

x + y = 20 ..... (1)

x - y = 10 ........ (2)

Now, from (1) + (2)

2x = 30

x = 15

putting value of x in eq. (1)

15 + y = 20

y = 20 - 15 = 5

Two third of the faculty members of a department are female. Twelve of the male faculty members are unmarried, while 60% of them are married. What is the total number of faculty members in the department?

ক) 90 খ) 60 গ) 30 ঘ) None of these

ব্যাখ্যা (Explanation)

40% (married) of total male = 12

100% of total male = 12*100/40

= 30

If total number of faculty = x

then, total number of male faculty = x - 2x/3 = (3x-2x)/3 = x/3

Thus,

x/3 = 30

x = 30*3 = 90

Half of the students of a school play football and one third of the rest play cricket. The remaining 300 students do not play either of the games. How many remaining students are there in the school?

ক) 360 খ) 900 গ) 550 ঘ) Nome of these

ব্যাখ্যা (Explanation)

Let number of total students be = x

Now, students play football = x/2

students play cricket = x/3*(x - x/2) = x/3 * x/2

= x/6

number of students that do not play either of games = x - (x/2 + x/6)

A widow received 1/3 of her husband’s estate, and each of her three sons received 1/3 of the balance. If the widow and one of her sons received a total of Tk. 360,000 from the estate, what was the worth of the estate in Tk?

ক) 540,000 খ) 576,000 গ) 648,000 ঘ) None of these

ব্যাখ্যা (Explanation)

window recieves x/3 of the estate. [If entire estate is x]

one of the three sons recieve = [{x-(x/3)}*1/3]

= (2x/3)*1/3 = 2x/9

Now, A/Q,

x/3 + 2x/9 = 360000

(3x+2x)/9 = 360000

5x/9 = 360000

x = 9*36000/5

x = 648000

The ages of two persons differ by 16 years. 6 years ago, the elder one was 3 times as old as the younger one what is the present age of the older person in years?

ক) 20 খ) 10 গ) 30 ঘ) None of these

ব্যাখ্যা (Explanation)

Let's take the present age of the elder person = x

and the present age of the younger person = x – 16

(x – 6) = 3 (x-16-6)

=> x – 6 = 3x – 66

=> 2x = 60

=> x = 60/2 = 30

Mr. X can do a job in 8 days and his son can do it in 12 days, How many days will it take them to complete the job if they work together?

ক) 5 খ) 24/5 গ) 10 ঘ) None of these

ব্যাখ্যা (Explanation)

For Mr X,

in 8 days, he can do 1 job

in 1 day, he can do 1/8 job

For his son,

in 12 days, he can do 1 job

in 1 day, he can do 1/12 job

If they work together, in 1 day, they can do (1/8 + 1/12) job

= (3+2)/24

&nbs

A company makes a profit of 6% on its first Tk. 10,000 of sales each day, and 5% on all sales in excess of Tk. 10,000 for that day. How many taka in profit will the company make in a day when sales are Tk. 60,000?

ক) 2500 খ) 3000 গ) 3100 ঘ) None of these

ব্যাখ্যা (Explanation)

Profit on first 10,000Tk. = 6*10000/100 = 600 Tk.

Profit on the rest of 60,000 Tk. that is,

Profit on 50,000 Tk. = 5*50000/100 = 2500 Tk.

Total Profit = ( 2500 + 600 ) Tk. = 3100 Tk.

নিজের প্রস্তুতি যাচাই করুন — অ্যাপে লাইভ পরীক্ষা দিয়ে মেরিট লিস্টে নিজের অবস্থান দেখুন।

অ্যাপ ইন্সটল করুন

The sales price of an item including the sales tax is Tk. 616. The tax rate is 10%. If the shopkeeper made a profit of 12%, what was the cost price of the item in Tk?

ক) 500 খ) 513 গ) 550 ঘ) None of these

ব্যাখ্যা (Explanation)

110% of S.P. = 616 Tk.

= S.P. = Tk.(616 x 100/110) = Tk.560.

C.P. = Tk.(100/112 x 560)

= Tk.500

In a store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains the same, what percent of profit could be made on the selling price?

ক) 30% খ) 70% গ) 100% ঘ) None of these

ব্যাখ্যা (Explanation)

Let C.P.= Tk.100.

Then, Profit = Tk.320,

S.P. = Tk.420.

New C.P. = 125% of Tk.100 = Tk.125

New S.P. = Tk.420.

Profit = Tk.(420 - 125) = Tk.295

Required percentage = (295/420) * 100

= 70%(approx)

The profit earned from selling an item for Tk. 900 is double the loss incurred when the item is sold for Tk. At what price the item should be sold to make 25% profit?

ক) Tk. 600 খ) Tk. 750 গ) Tk. 800 ঘ) None of these

ব্যাখ্যা (Explanation)

Let C.P be Rs. x

900 - x = 2(x - 450)

=> x = Tk.600

C.P = 600 gain required is 25%

S.P = [(100+25)*600]/100

= Tk.750

The G7 Summit 2015 took place in-

ক) France খ) Italy গ) United States ঘ) Germany

ব্যাখ্যা (Explanation)

The 41st G7 summit was held in Schloss Elmau, Krün, Bavaria, Germany on June 7–8, 2015. In March 2014 the G7 declared that a meaningful discussion was currently not possible with Russia in the context of the G8. Since then meetings have continued within the G7 process.

In the land border agreement between Bangladesh and India, how many Indian enclaves did Bangladesh get?

ক) 51 খ) 91 গ) 111 ঘ) None of these

ব্যাখ্যা (Explanation)

অখণ্ড ভারত বিভক্ত করে ভারত এবং পাকিস্তান নামক দুটি স্বাধীন রাষ্ট্র প্রতিষ্ঠার লগ্নে ১৯৪৭ খ্রিস্টাব্দে রেডক্লিফের মানচিত্র বিভাজন থেকেই উদ্ভব ছিটমহলের। এক দেশের ভূখণ্ডে থেকে যায় অন্য দেশের অংশ। এতে এক অসহনীয় মানবিক সমস্যার উদ্ভব হয় । ১৬২ টি ছিটমহল ছিল দুই প্রতিবেশী দেশে। এর মধ্যে ভারতের ১১১টি ছিটমহল ছিল বাংলাদেশের অভ্যন্তরে। আর বাংলাদেশের ৫১টি ছিটমহল ছিল ভারতের অভ্যন্তরে। এসব ছিটমহলে বসবাসকারী জনসংখ্যা ছিল প্রায় ৫১ হাজার। ২০১১ সালের জনগণনা অনুযায়ী বাংলাদেশের অভ্যন্তরে ভারতের ছিটমহলে বসবাসরত লোকসংখ্যা ছিল ৩৭ হাজার এবং ভারতের অভ্যন্তরে বাংলাদেশের ছিটমহলের লোকসংখ্যা ছিল ১৪ হাজার।২৪ হাজার ২৬৮ একর ভূমি নিয়ে দুই দেশের ছিটমহল ছিল। তার মধ্যে ভারতের জমির পরিমাণ ছিল ১৭ হাজার ১৫৮ একর। বাংলাদেশের ছিটমহলের জমির পরিমাণ ছিল ৭ হাজার ১১০ একর।[১] ভারতীয় ছিটমহলগুলোর অধিকাংশই ছিল বাংলাদেশের উত্তর-পশ্চিমাঞ্চলে। এসবের মধ্যে লালমনিরহাটে ৫৯ টি, পঞ্চগড়ে ৩৬ টি, কুড়িগ্রামে ১২ টি ও নীলফামারিতে ৪ টি ভারতীয় ছিটমহল ছিল। অপরদিকে বাংলাদেশের ৫১টি ছিটমহলের অবস্থান ছিল ভারতের পশ্চিমবঙ্গ রাজ্যে। এর মধ্যে ৪৭টি

Select the word that best expresses the underlined word in each sentence: Evil is not innate to man, rather circumstances and needs change man’s priorities, thereby deeming his actions unacceptable in society.