Social Islami Bank Ltd - Trainee Officer - 31.12.2010 এর প্রশ্ন পড়ুন।

প্রশ্নঃ The value of 0.4*0.04*0.004*40 is --

বর্ণনাঃ

.4 ×. 04 ×. 004 × 40

= ( 4 × 04 × 004 × 40) /( 10 × 100 × 1000) 

= 256/100000

= 0.00256

প্রশ্নঃ The ratio of boys and girls in a class is 1 : 2 and the classroom has 24 students. How many boys would have to be admitted to make ratio of boys to girls 1 : 1?

বর্ণনাঃ

No. of boys = 24×  1/ (1+2) = 24 ×1/3 = 8

No. of Girls  = 24 × 2/3 = 16

How many boys = 16 - 8 = 8

প্রশ্নঃ Which one of the following fractions is the smallest?

বর্ণনাঃ

2/9 =0.22 [ smallest ]

5/8 = o. 6

1/2 = 0.5

7/12 = 0.5 

প্রশ্নঃ if 1/2 of the money in a certain trust was invested in stocks, 1/4 in bonds, 1/5 in a mutual fund, and the remaining Tk. 10,000 ina government certificate, what was the total amount of the trust fund?

বর্ণনাঃ

Portion  invested in government certificate

= 1 - ( 1/2 + 1/4 + 1/5)  

= 1 - ( 10 + 5 + 4) /20

= 20 - 19/20 

= 1/20 

1/20 portion  = 10, 000

1 portion  = 10, 000 ×20/1 = 2, 00, 000

প্রশ্নঃ In a university, 80 percent of the students lived in hostel, and 60 percent of the hostel students are lucky to get a single room. If number of lucky students is 1200, then how many students were there in the university?

বর্ণনাঃ

Let,  

total No. of students  = x

No. of students  lived  in hostel  = x × 80% = 0.8x

No.of  Lucky  students  = 0.8x × 60% = 0.8x × 0.6 = 0.48x

According to question,

0.48x = 1200

x = (1200 ×100)/048

x = 2500

প্রশ্নঃ X sells a product to Y and makes a profit of 25%. Y sells it to Z at a loss of 20%. If Z buys it for Tk. 140, what is X's purchase price?

বর্ণনাঃ

Let,  

X's purchase price = a

X's selling  price = a + a × 25a% = 1.25a

= Y's purchase  price

Y's selling price = 1.25.a - 1.25a × 20% 

= 1.25a - 1.25a ×20/100

= 1.25a - 0.25a

= a = Z's purchasing price = 140

প্রশ্নঃ On selling an article for Tk. 550, a man gains 10%. What will be the selling price, if desired profit is 20%?

বর্ণনাঃ

At 10% gain,

If selling  price Tk(100+10) or 110 cost Tk.110

If selling price Tk.550 cost Tk. = (100 × 550)/110 = Tk.500

At 20% profit,

Selling  price = 500 + 500 × 20% 

                            = 500 + 500 × 20/100 = 600

প্রশ্নঃ A can do a piece of work in 15 days and B can do it in 10 days. Working together how long will they take to finish the work?

বর্ণনাঃ

In 15 days A can do 1 portion

in 1 days A can do 1/15 portion

In 10 days B can do 1 portion

In 1 days B can do 1/10 portion

In 1 day A & B can do ( 1/15 + 1/10)  or  2+ 3/30

or 5/30 or 1/6 portion

A & B can finish  1/6 portion  in 1 day

A & B can finish  1 portion  in 1/6 day

= 6 days 

প্রশ্নঃ If the length of a rectangle is 8 cm and its diagonal is 10 cm, find its area.

বর্ণনাঃ

Using short cut technique

ABC is a right  angled triangle

সমকোণী ত্রিভুজের তিন বাহুর অনুপাত হতে পারে

 3 : 4 : 5 or 5 : 12 : 13

3 : 4 : 5 = 6 : 8 : 10

Area = 6 × 8 = 48 cm²

প্রশ্নঃ At present how many disciplines are included for awarding Nobel Prize?

বর্ণনাঃ

মোট ছয়টি বিষয়ে পুরস্কার প্রদান করা হয়। বিষয়গুলো হলো: পদার্থবিজ্ঞান, রসায়ন, চিকিৎসা শাস্ত্র, অর্থনীতি, সাহিত্য এবং শান্তি।

নোবেল পুরস্কারকে এ সকল ক্ষেত্রে বিশ্বের সবচেয়ে সম্মানজনক পদক হিসেবে বিবেচনা করা হয়।

নোবেল পুরস্কারপ্রাপ্তদেরকে ইংরেজিতে নোবেল লরিয়েট বলা হয়।

প্রশ্নঃ Fourth Estate means ---

বর্ণনাঃ

The Fourth State (German: Die vierte Macht) is a 2012 German thriller film directed by Dennis Gansel and starring Moritz Bleibtreu, Kasia Smutniak, Max Riemelt, Rade Serbedzija, Mark Ivanir and Isabella Vinet.

It premiered in Germany on March 8, 2012. The working title was The Year of the Snake.

প্রশ্নঃ The layer of atmosphere close the Earth's surface is called ----

বর্ণনাঃ

The troposphere is the lowest layer of Earth's atmosphere, and is also where nearly all weather conditions take place. It contains 75% of the atmosphere's mass and 99% of the total mass of water vapour and aerosols.

The average height of the troposphere is 18 km (11 mi; 59,000 ft) in the tropics, 17 km (11 mi; 56,000 ft) in the middle latitudes, and 6 km (3.7 mi; 20,000 ft) in the polar regions in winter.

The total average height of the troposphere is 13 km (8.1 mi; 43,000 ft).