Problem :
The prime factors of 13195 are 5, 7, 13 and 29.
What is the largest prime factor of the number 600851475143 ?
Solution Approach :
Simple approach would be to identify all the prime numbers under the square root of the number 600851475143 which divide the the number 600851475143. When you find a prime factor using this method, keep the track of largest such number to get our result. Read More…
Problem 2:
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:
1, 2, 3, 5, 8, 13, 21, 34, 55, 89, …
By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.
Solution Approach:
Question starts of with introduction to Fibonacci sequence, which by the way, is a very interesting topic and highly encourage you guys to read about it in web whenever you get time.
Idea is to get the “next” element of Fibonacci series by adding the “present” and “previous” element. When the element is an even number, add to the “sum” variable. Very simple indeed. Give it a try for yourself before checking the problem solution below. Read More…
Problem Statement :
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.
Find the sum of all the multiples of 3 or 5 below 1000.
Solution Approach:
Being the first problem of the series, its quite a simple one. there are many ways to approach this problem.
Most simplest one is to iterate through all the numbers from 3 to 1000 and check if its divisible by 3 or 5. If they are, just add them to the sum. Read More…
Well lately I was experiencing some sluggish performance with my android phone. So I decided to format the baby and bring it back to life. I was sure that later down the road , I will be requiring to do same again. So thought of adding this post in the blog, so that other also can use it.
You can format the phone for other reasons as well. Maybe you install a lot of apps, and some of them are acting a little mischievous, or maybe something has just gone wrong deep down in the system where you have little chance of fixing it. At times like this, you could agonize over tweaks and possible fixes, or you could spend time uninstalling different combinations of apps. But maybe wiping the phone clean and starting over is the best overall option sometimes. Read More…
Image uploading and manipulating them can be such a pain in the you-know-what. Even if you are working in a awesome framework like Codeigniter . So, we are gonna keep a code safe in this blog, which we can always come back and “copy paste” when and where required. What are we aiming here ? I am building a website with lots of users in it and users have a profile with profile pic. User can upload pic and use it as their avatar for the site. User can upload the picture of any size and we need to manipulate it to fit our requirement. Simple! Lets start then.
1) Upload an Image (duh! )
2) Manipulate it and create a thumbnail for it ! ( oh, yeah 😉 ! )
3) Display it where ever required ! Read More…
Do you want to impress or confuse clients or Vice versa ? Use Techno vocabulary. It can be called the “Buzzword” writing method. It is simple.
There are three columns of words involved, as follows: Read More…
Finally 3G is actually hitting the streets of India. Slowly,but for sure. Now, if you are mistaken 3G for a mobile technology that will revolutionize the overall mobile experiance then I ‘m sorry for you,my friend. Why? The reasons are several.
Lets begin with “3G” itself. First of all , it’s not a technology.It’s a generation of standards for mobile phones and mobile telecommunication services. According to 3G as a “standard” it must fulfill the International Mobile Telecommunications-2000 (IMT-2000) specifications by theInternational Telecommunication Union. Application services include wide-area wireless voice telephone, mobile Internet access, video calls and mobile TV, all in a mobile environment. To meet the IMT-2000 standards, a system is required to provide peak data rates of at least 200 kbit/s. Read More…
Its amazing how you can wrap up the vision of a billion dollar company into a small pattern or a picture and let it do the talking. That is the power of logo. This is exactly why you give atmost importance while you transform your conception into a LOGO. A good logo design is not just a visual representation of a business. It actually describes stories, ideas and the vision of that particular business. It can convey emotions, fascinate the viewers and even manipulate them into doing things. These logos tell you stories and today we are sharing with you 15 such fascinating story which is hidden behind world famous logos. Read More…
Facebook was down now. It was up soon but was draggingly slow. Search was not working. I hope its not hacked, like what had happened with twitter the other.
Just in case if you are wondering what is this dude talking about, let me tell you that twitter was hacked, very recently. They hacked twitter and wrote “I am a nice pirate”. Huh? Thats it?? Oh! I left the most important part. They wrote the message from Mr.Obama Barracks account ! Wow! That sounds cool. Read More…
Hey guys,
I saw a post in my friends page with title “SHOCKING Hidden Message In The Google Logo! You wont believe this!” . Ah ! I was not at all interested in checking it out , but we all are human . Curiosity is a born gift or curse , what ever you say. Its obvious that people who want to spam always exploit this human proclivity to explore things. But you will still be eager to know what’s that “HIDDEN SECRET”? Thats why I thought I will put it over here, so that at least my friends wont have to undergo all that spam process ! Read More…
