## Welcome to BrainDen.com - Brain Teasers Forum

 Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account. As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends. Of course, you can also enjoy our collection of amazing optical illusions and cool math games. If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top. If you have a website, we would appreciate a little link to BrainDen. Thanks and enjoy the Den :-)
Guest Message by DevFuse

# Utkrisht123

Member Since 06 Mar 2013
Offline Last Active Sep 28 2014 08:27 AM

### Topics I've Started

28 September 2014 - 08:24 AM

I have created a new facebook page called Sunday Puzzles. Please like it.

### How many oranges are there?

28 September 2014 - 08:16 AM

A boy sells oranges from door to door.
One day while on his rounds he sold 1/2 an orange more than half his orange to the first customer. To the second customer he sold 1/2 an orange more than half of the remainder and to the third and last customer he sold 1/2 an orange more than half she now had, leaving her none.
Can you tell the number of oranges he originally had?
Oh by the way he never had to cut an orange

### Funny Equation

15 December 2013 - 06:16 AM

In a classroom of standard of VIII somebody wrote an equation on a blackboard ; to the left of the equal sign is one symbol, and to the right three symbols. A boy remarked that if the symbol to the left of the equal sign were inverted and one of the three symbols to the right were erased, the equation would still be true and it contains no redundant or unnecessary symbols. What is the equation?

(The line in a fraction counts as a symbol)

### The Conscientious Driver

11 November 2013 - 03:25 PM

Mr. D  always followed the advice to conserve energy as he was a conscientious driver. While driving his family Ford one day, he came to a stop sign and noticed that the odometer showed 25952 miles. Observant as he was he recognised that the number was a palindrome. He thought that it will be a long time before a palindromic number happens again. Yet two hours later when he arrived home the odometer showed a new palindrome number.

What was the new palindrome number, and how fast was he travelling in those two hours?

### Interview Question

05 November 2013 - 04:35 AM

In an interview, the interviewer asked a candidate about a four digit number whose first two as well as last two digits are perfect squares.

The conversations between the interviewer and the candidate are as follows

Interviewer : Can you tell me what number I am thinking of ?

Candidate : No I am not sure.

Interviewer : There are no zeroes in the number.

Candidate : I am still not sure

Interviewer : There is no repetition of digits.

Candidate : Sorry, I am not sure even now.

Interviewer : OK the sum of digits is a prime number.

Candidate : Sorry.

Interviewer : The first two digit number is bigger than the last two digit number. And no digit is 5. If you still don't know then I am sorry you                            may leave the room.

Candidate : Yes sir, now I know the number.

Can you tell what the number is ?