at 90 tk price, total share he bought= 45000/90=500 share at 60 tk price, total share he bought= 3000/60=50 share total investment= 45000+3000 tk= 48000 tk total share= 500+50=550 average cost=48000/550=87.27 tk

If 25% of 220 equals 5% of w, then w is ----

ক) 55 খ) 100 গ) 500 ঘ) 1000

ব্যাখ্যা (Explanation)

25% of 220 =220 X .25 =55 55 is 5.5% of = 55/5.5 X 100 = 1000

In a class there are 35 boys and 63 girls. Find out the ratio of boys to girls.

ক) 7 : 20 খ) 5 : 9 গ) 3 : 7 ঘ) 5 : 7

ব্যাখ্যা (Explanation)

ratio =35:63=5:9

If 2x-1 = 9, then what is the value of 10x-5?

ক) 45 খ) 35 গ) 55 ঘ) 95

ব্যাখ্যা (Explanation)

here,

2x-1=9

or,2x=10

or, x=5

so, 10x-5 =50-5=45

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

অ্যাপ ইন্সটল করুন

A man’s age is now 3 times his son’s age. Eight years back, the man’s age was 5 times his son’s age. What is the present age of the son?

ক) 15 খ) 16 গ) 20 ঘ) 18

ব্যাখ্যা (Explanation)

his sons age=x his age= 3x eight years before, 3x-8=5(x-8) or,x=16

An item is sold for taka 65, giving the retailer a profit of 30% of the cost. What will be the new retail price if the retailer cuts his profit to 10% of costs?

ক) 55 খ) 400 গ) 50 ঘ) 140

ব্যাখ্যা (Explanation)

at 30% profit, selling price 130 tk when cost 100 tk selling price 1 tk when cost 100/130 tk

A cake is divided into 18 pieces. If Rehana takes 1/3 of the cake and Rahim takes 1/3 of the cake left, how many pieces are left?

ক) 8 খ) 6 গ) 4 ঘ) 10

ব্যাখ্যা (Explanation)

rehana took= 1/3 of 18 piece=6 piece ramaining=12 pc rahim took 1/3 of 12 pc=4 pc total remaining=12-4=8 pc

The angles of a triangle are in the ratio of 2 : 3 : The largest angle in the triangle is:

ক) 40 খ) 75 গ) 70 ঘ) 80

ব্যাখ্যা (Explanation)

here, angles are 2x,3x,4x total angle of a triangle=180 we know, 2x+3x+4x=180 9x=180 x=180/9=20 so, largest angle= 4 X 20=80

In a school the ratio of boys to girls is 3 to If the total student is 150 then how many boys are there?

ক) 45 খ) 75 গ) 90 ঘ) 120

ব্যাখ্যা (Explanation)

ratio= 3:7 sum of ratio=3+7=10 boys are=3/10 X150 =45

What is the value of “n” if (8-3)(8-n) = 40?

ক) - 3 খ) 8 গ) 0 ঘ) 5

ব্যাখ্যা (Explanation)

here, (8-3)(8-n) = 40 or,5(8-n)=40 or,n=0

What is the next?

ক) (a) খ) (b) গ) (c) ঘ) (d)

Mary’s mother have three daughters : May, June and—

ক) July খ) April গ) Mary ঘ) Julie

If 1 egg takes 5 minutes to boil, how many minutes will take to boil 10 eggs?

ক) 1 minute খ) 10 minute গ) 50 minutes ঘ) 5 minutes

Suppose you are in charge of the security checking of an entrance gate of a cash queue. There are a mixed group of people waiting for paying the bill and you can make only three lines as there are only three counters. There are 8 male, 5 female, 3 pregnant ladies 3 people in wheel chair and 5 senior citizens. How you will categorize the lines?

ক) (1) Male, (2) Female, (3) Senior Citizen খ) (1) Male, (2) Female, (3) people in wheel chair গ) (1) Male, (2) Female, (3) Pregnant Ladies ঘ) (1) Male, (2) Female, (3) Senior citizens, People in wheel chair, Pregnant ladies

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

অ্যাপ ইন্সটল করুন

Some months have 31 days. How many have 28 days?

ক) 1 খ) 2 গ) 6 ঘ) 12

RAM stands for :

ক) Random Access Memory খ) Readily Available Money গ) Reading Access Memory ঘ) Reliable Association for Money

Which one is the popular social networking website?

ক) Monster.com খ) Facebook.com গ) Mediafire.com ঘ) Google.com

What is CPU stands for?

ক) Central Processing Unit খ) Celebrity Program Unit গ) Controlled Publication for Universities ঘ) None of the above

The term ____ describe the process of revising a document.

ক) Editing খ) Formatting গ) Integrating ঘ) Styling

Which of the following is a strong media is----

ক) Modern খ) Scanner গ) CD ঘ) Printer

Which of the following is not anti-virus software?

ক) Norton খ) McAfee গ) Kaspersky ঘ) Win-pro

Which of the following symbol must exist in an email?

ক) # খ) @ গ) ^ ঘ) &

WINDOWS is a (an)

ক) Operating system খ) Programming language গ) Anti-virus software ঘ) Data storage device

In general “My computer” is located at-

ক) C drive খ) D drive গ) CD ROM drive ঘ) Pen drive

ব্যাখ্যা (Explanation)

✔ The C drive is the main hard disk partition which contains the operating system and the related system files.
✔ The C drive is considered as the primary hard drive of the system
✔ It is used for storing the operating system,system files and other applications and their related files.

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

অ্যাপ ইন্সটল করুন

Which program is used to type written document?

ক) Word processor খ) Microsoft outlook express গ) C + + ঘ) Acrobat Reader

ব্যাখ্যা (Explanation)

- ওয়ার্ড প্রসেসর একটি সফ্টওয়্যার অ্যাপ্লিকেশন যা লিখিত নথি টাইপ করতে ব্যবহৃত হয়। এটি ইউজারকে পাঠ্য নথি তৈরি, সম্পাদনা, বিন্যাস এবং মুদ্রণ করতে সাহায্য করে।

কিছু জনপ্রিয় ওয়ার্ড প্রসেসরের মধ্যে রয়েছে:

Microsoft Word
Google Docs
LibreOffice Writer
OpenOffice Writer
Apple Pages
WPS Office Writer

সঠিক উত্তর: ০ ভুল উত্তর: ০