ডাচ-বাংলা ব্যাংক

প্রশ্নঃ Saif, Dr. Nazma and Shakil divided a sum of money among themselves in the ratio 2:3:7 . Find the share of Saif if the total share of Saif and Dr. Nazma together is TK. 1500 less than that of Shakil.

বর্ণনাঃ

[ বি. দ্র. : প্রশ্নে সঠিক উওর দেয়া নাই। সঠিক উওর হবে ১৫০০ টাকা। যেখানে মোট টাকার পরিমাণ ৯০০০ টাকা, সেখানে সাইফের অংশ কোনভাবেই ১৫০০০ হওয়া সম্ভব নয়।  

নিচে এর ব্যাখ্যা দেয়া হল...] 

ধরি, মোট টাকার পরিমাণ x 

আনুপাতিক রাশিগুলোর যোগফল = 2 + 3 + 7 = 12

সাইফের অংশ = x এর 2/12

= x/6

ডা. নাজমার অংশ = x এর 3/12

= x/4

শাকিলের অংশ = x এর 7/12 

= 7x/12

প্রশ্নমতে, 7x/12 - ( x/6 + x/4)  = 1500 

=> 7x/12 - 5x/12 = 1500

=> 2x/12 = 1500

=> x/6 = 1500

=> x = 9000

মোট টাকার পরিমাণ 9000 টাকা৷ 

সাইফের অংশ = x/6 = 9000/6 = 1500 টাকা (উওর)

ডা. নাজমার অংশ = x/4 = 9000/4 = 2250 টাকা

শাকিলের অংশ = 7x/12 = 7*9000/12 = 5250 টাকা

1500+2250+5250 = 9000 টাকা।  

সে হিসেবে আমার মতামত, এই প্রশ্নের অপশনে ভুল আছে। সঠিক উওরটি নেই। সঠিক উওর হবে ১৫০০ টাকা।   

প্রশ্নঃ A sink contains exactly 12 liters of water. If water is drained from the sink until it holds exactly 6 liters of water less than the quantity of water drained away, how many liters of water were drained away ?

বর্ণনাঃ

মনে করি, পানি ড্রেইন হয়ে যায় : 'ক' পরিমান

পাত্রে পানি অবশিষ্ট থাকে = ক - ৬

মোট পানির পরিমান = ক + ক -৬

প্রশ্নমতে,

মোট পানি= মোট পানি

১২= ২ক-৬

=> ২ক= ১৮

=>ক = ৯

উত্তর : ৯

প্রশ্নঃ Cheese, egg and beef sandwiches were made for a picnic in a ratio of 5 to 7 to 8. If a total of 120 sandwiches were made, how many egg sandwiches were made ?

বর্ণনাঃ

Egg Sandwiches=(120*7)/20 =42

প্রশ্নঃ To reproduce an old photograph, a studio charges Tk. z to make anegative, Tk. 0.6z for each of the first 10 prints, and Tk. 0.2z. for each print in excess of 10 prints. If Tk. 45 is the total charge to make one nagative and 20 prints from an old photograph then what is the value of z?

বর্ণনাঃ

Let 1st cost (C1)= z

C2=.6z×10=6z

C3=.2z×10=2z

Totat cost=c1+c2+c3=9z

ATQ

9z=45

z=45/9=5

Ans. 5

প্রশ্নঃ 50% of the people in an area read Ittefaq and 60% of the people in that area read Prothom Alo. 20% people read both the newspapers. What percent of people do not read any of the newspapers ?

বর্ণনাঃ

Total=Ittefaq+Prothom Alo-Both+ None

=> 100%=50%+60%-20%+None.

So, None=10%

প্রশ্নঃ CURIOSITY : KNOW

বর্ণনাঃ

Know বা জানার আগ্রহ হলো curiosity আর travel (ভ্রমন) এর আগ্রহ হলো Wanderlust. 

প্রশ্নঃ LAWYER : COURTROOM

বর্ণনাঃ

Lawyer এর কাজের স্থান হলো Courtroom। তেমনি Gladiator এর কাজের স্থান হলো Arena। 

প্রশ্নঃ FRAGILE : BREAK

বর্ণনাঃ

Fragile (ভঙ্গুর) জিনিস যেমন সহজে break (ভাঙ্গা) করা যায় ঠিক তেমনি flammable (দাহ্য) জিনিস সহজে পোড়ানো (burn) যায়। 

প্রশ্নঃ In company X, the average salary of 10 of the employees is TK. 30,000 the average salary of 30 other employees is TK. 40,000 and the average salary of the remaining 20 employees TK. 60,000. What is the average salary of the 60 employees at the company ?

বর্ণনাঃ

The average salary of 60 employees = (10 x 30000 + 30 x 40000 + 20 x 60000)/60 = 45000.

প্রশ্নঃ A collection of books went on sale and 2/3 of them were sold for TK. 2.30 each. If none of the 36 remaining books were sold, what was the total amount received for the books that were sold ?

বর্ণনাঃ

1/3 of the collection = 36

Therefore, 2/3 of the collection = 36 x (2/3) / (1/3) = 72.

Therefore, amount received from book sale = 72 x 2.30 = 165.6 TK. 

প্রশ্নঃ At the same time that a 60-feet tall building casts a shadow that 21.5 feet long, a nearby tree casts a shadow that is 18 feet long . Which measure is closest to the height of the tree ?

বর্ণনাঃ

Two similar right angle triangles can be drawn from the given information.

Now, height of the tree/height of the building = shadow of the tree/ shadow of the building

Therefore, height of the tree = (18/21.5) x 60 = 50.2

প্রশ্নঃ Mr. Karim's age is 4 year less than 3 times of Mr. Momen's age. If Mr. Momen is h years old, Which of the following represents Mr. Karim's age ?

বর্ণনাঃ

Karim = 3 x (Momen) - 4 = 3h - 4

প্রশ্নঃ Which of the following is the longest time?

বর্ণনাঃ

1 day = 24 hours = 24 x 60 minutes = 1440 minutes

10 hours = 10 x 60 minutes = 600 minutes

Therefore, 1500 minutes is the longest.

প্রশ্নঃ A cake is put in the oven at 7.20 am. If the cake takes three quarters of an hour to bake, at what time should it be taken out of the oven ?

বর্ণনাঃ

Three quarters of an hour = 45 minutes

7:20 am + 45 minutes = 8:05 am

প্রশ্নঃ Last year there were 1172 students at Banani High School. This year there are 15 percent more students than last year. Approximately how many students are at Banani High School this year ?

বর্ণনাঃ

15% of 1172 ≈ 175

Number of students = 1172 + 175 = 1347

প্রশ্নঃ Last season, Ellen and Janet together won 32 tennis matches . Ellen won 6 more matches than Janet. How many matches did Ellen win ?

বর্ণনাঃ

E + J = 32

E + (E - 6) = 32

2E = 32 + 6 = 38

E = 19.

প্রশ্নঃ In a random survey, 25 out of 150 people were able to give a correct answer to the question asked. If 500 people are surveyed , about how many would be expected to answer the question correctly ?

বর্ণনাঃ

Among 150, number of people giving correct answer = 25

Therefore, number of people expected to answer correctly = (25/150) x 500 ≈ 83.

প্রশ্নঃ Which Protocol is used for the Internet access ?

বর্ণনাঃ

TCP/ IP is a set a protocol in Computer Networking. TCP Mean Transmission Control Protocol and IP Mean Internet Protocol. On the other hands the given another three options are not Protocol. So TCP/ IP is the correct Answer.