Jamuna Bank, Probationary Officer 2012

৫৮ টি প্রশ্ন

একই বিষয়ের সব টপিক

A water tank can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tank from empty state if B is used for half the time, and A and B fill it together for the other half?

ক) 30minutes খ) 40 minutes গ) 42minutes ঘ) 57minutes

ব্যাখ্যা (Explanation)

Let the total time be x mins. Part filled in first half means in x/2 = 1/40 Part filled in second half means in x/2 = (1/60 + 1/40) = 1/24

Now, (x/2 * 1/40) + (x/2 + 1/24) = 1

x/2 * (1/40 + 1/24) = 1

x/2 * 1/15 = 1

x = 30 mins

50 men took a dip in a water tank 40m long and 20m broad on a religious day. If the average displacement of water by a man is 4 m3, then the rise in the water level in the tank will be-

ক) 25cm খ) 30cm গ) 35cm ঘ) 50 cm

ব্যাখ্যা (Explanation)

Total volume of water displaced = (4 x 50) m3 = 200 m3.

Rise in water level = 200/(40*20) m = 0.25 m = 25 cm

There are two examinations rooms A and B. If 10 students are sent from A to B, then the number of students in each room is the same. If 20 candidates are sent from B to A, then the number of students in A is double the number of students in B. What is the number of students in room A?

ক) 20 খ) 80 গ) 100 ঘ) 200

ব্যাখ্যা (Explanation)

Let the number of students in rooms A and B be x and y respectively.

Then, x - 10 = y + 10 x - y = 20 .... (i)

and x + 20 = 2(y - 20) x - 2y = -60 .... (ii)

Solving (i) and (ii) we get: x = 100 , y = 80.

The required answer A = 100.

Seats for Mathematics Physics and Biology in a university are in the ratio of 5 : 7 : There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?

ক) 2:3:4 খ) 6:7:8 গ) 6:8:9 ঘ) Remain the same

ব্যাখ্যা (Explanation)

Originally, let the number of seats for Mathematics, Physics and Biology be 5x, 7x and 8x respectively.

Number of increased seats are (140% of 5x), (150% of 7x) and (175% of 8x).

140 x 5x ,

An industrial loom weaves 128 metres of cloth every second. Approximately, how many seconds will it take for the loom to weave 25 metres of cloth?

ক) 178 খ) 195 গ) 204 ঘ) 488

ব্যাখ্যা (Explanation)

the required time be x seconds.

More metres, More time (Direct Proportion)

0.128 : 25 :: 1 : x 0.128x = 25 x 1

x = 25 = 25 x 1000 0.128 128

Le the required time be x seconds.

More metres, More time (Direct Proportion)

The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the whole team?

ক) 23 years খ) 24 years গ) 25 years ঘ) 26 years

ব্যাখ্যা (Explanation)

Let the average age of the whole team by x years.

11x - (26 + 29) = 9(x -1)

11x - 9x = 46

2x = 46

x = 23.

So, average age of the team is 23 years

The present ages of three persons are in the ratio of 4:7: Eight years ago, the sum of their ages was What are their present ages in years?

ক) 8,20,28 খ) 16,28,36 গ) 20,35,45 ঘ) 12,21,27

ব্যাখ্যা (Explanation)

Let their present ages be 4x, 7x and 9x years respectively.

Then, (4x - 8) + (7x - 8) + (9x - 8) = 56

20x = 80

x = 4.

Their present ages are 4x = 16 years, 7x = 28 years and 9x = 36 years respectively.

A two-digit number is such that the product of the digits is When 18 is added to the number, then the digits are reversed. What is the number?

ক) 18 খ) 24 গ) 42 ঘ) 81

ব্যাখ্যা (Explanation)

Let the ten's and unit digit be x and

respectively.

Then,

10x +

A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours. How long will B alone take to do it?

ক) 8 hours খ) 10 hours গ) 12 hours ঘ) 24 hours

ব্যাখ্যা (Explanation)

A's 1 hour's work =

;

(B + C)'s 1 hour's work =

;

(A + C)'s 1 hour's work =

(A + B + C)'s 1 ho

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

অ্যাপ ইন্সটল করুন

A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. What is the percentage of decrease in area?

ক) 10% খ) 10.08% গ) 20% ঘ) 28%

ব্যাখ্যা (Explanation)

Let original length = x and original breadth = y.

Decrease in area

= xy -

A train 110 metres long is running with a speed of 60 km/hr. In what time will it pass a man who is running at 6 km/hr in the direction opposite to that in which the train is going?

ক) 5 sec খ) 6 sec গ) 7 sec ঘ) 10 sec

ব্যাখ্যা (Explanation)

Speed of train relative to man = (60 + 6) km/hr = 66 km/hr.

66 x

m/sec

If a person walks at 14 km/hr instead of 10 km/hr, he can cover 20 km more. The actual distance travelled by him is-

ক) 50km খ) 56km গ) 70km ঘ) 80km

ব্যাখ্যা (Explanation)

Let the actual distance travelled be x km.

Time taken to travel x km at 10 km/hr = x/10 hr

Time taken to travel x+20 km at 14 km/hr = (x+20)/14 hr

Since the time taken is the same, we have:

x/10 = (x+20)/14

⇒14x = 10x + 200

⇒4x = 200

⇒x = 50 km

Therefore, the actual distance travelled is 50 km.

Kibria went to the stationers and bought things worth Tk. 25, out of which 30 paisa was sales tax on taxable items. If the tax rate is 6%, then what was the cost of the tax free items?

ক) Tk. 15 খ) Tk. 15.70 গ) Tk. 19.70 ঘ) Tk. 20

ব্যাখ্যা (Explanation)

Let the amount taxable purchases be Rs. x.

Then, 6% of x = 30 100

x = 30 x 100

A circular logo is enlarged to fit the lid of a jar. The new diameter is 50 percent larger than the original. By what percentage has the area of the logo increased?

ক) 50 খ) 80 গ) 100 ঘ) 125

ব্যাখ্যা (Explanation)

The area goes up as the square of the diameter, so the new area is (1.5)^2 times the old area, = 2.25 times larger. But the question is about the increase. The increase is 125%

A group of students decided to collect as many paisas from each member of a group as is the number of members. If the total collection amounts to Tk. 29, what is the number of members in the group?

ক) 57 খ) 67 গ) 77 ঘ) 87

ব্যাখ্যা (Explanation)

Money collected = (59.29 x 100) paise = 5929 paise.

Number of members = 5929 = 77.

A number consists of 3 digits whose sum is The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. What is the number?

ক) 145 খ) 253 গ) 370 ঘ) 352

ব্যাখ্যা (Explanation)

Let the middle digit be x. Then, 2x = 10 or x = 5. So, the number is either 253 or 352,

Since the number increases on reversing the digits, so the hundred's digit is smaller

than the unit's digit. Hence, required number = 253.

Find the odd word from list bellow

ক) Trifling খ) Significant গ) Substantial ঘ) Generous

Select the word that best matches the definition provided: The tailoring of globally produced products to make them suitable to local tastes and needs

ক) Globalization খ) Gloca UzatAon গ) Glycolization ঘ) Widening

The missing word: Europe is prettiest in summer.

ক) when খ) during গ) time ঘ) around

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

অ্যাপ ইন্সটল করুন

The missing word: I was looking forward receiving a quick reply of my mail from you.

ক) to খ) by গ) into ঘ) on

Currently, how many districts are there in the Rajshahi division?

ক) 8 খ) 16 গ) 17 ঘ) 10

Which African country was the first to recognize Bangladesh as an independent nation?

ক) Senegal খ) South Africa গ) Egypt ঘ) Nigeria

Who won the Nobel Prize in Literature in 2012?

ক) Tomas Transtromer খ) Mario Vargas Llosa গ) Herta Muller ঘ) MoYan

Which of the following minerals can be found at Barapukuria of Dinajpur district?

ক) Oil খ) Natural gas গ) Lime Stone ঘ) Coal

Which one of the following is the first community radio of Bangladesh?

ক) Radio Foorti খ) ABC Radio গ) Radio Padma ঘ) Radio Amar

In which of the following countries did the “Orange Revolution” take place?

ক) Ukraine খ) France গ) England ঘ) Thailand

The famous Bangladeshi player Mr. Siddiqur Rahman plays which of the following games?

ক) Cricket খ) Football গ) Shooting ঘ) Golf

Mr. Ban Ki-moon, the Secretary General of the UN, is a citizen of the following countries?

ক) Ghana খ) North Korea গ) South Korea ঘ) Egypt

Who captained the Bangladesh Test Cricket Team in their inaugural test cricket match?

ক) Habibul Bashar খ) Naimur Rahman Durjoy গ) AkramKhan ঘ) Khaled Masud

এই টপিকের সব প্রশ্ন ব্যাখ্যাসহ, ভুল-সঠিক-বুকমার্ক আলাদা করে রিভিশন — অ্যাপে।

অ্যাপ ইন্সটল করুন

Which of the following states was recently granted observer status by United Nations General Assembly resolution?

ক) Vatican খ) Palestine গ) Israel ঘ) South Sudan

সঠিক উত্তর: ০ ভুল উত্তর: ০