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#676 Re: Exercises » Imo 2008 » 2008-07-21 02:11:15
Nor is this for any Tarzan or Jane or any other Junglee!
Its no roll in the hay.. 'Ts for those who 'THINK DIFFERENT'!
#677 Re: This is Cool » Zero !!! » 2008-07-20 14:58:12
How??
Like..
Fixed LaTeX - Ricky
#678 This is Cool » Zero !!! » 2008-07-19 11:01:50
- ZHero
- Replies: 65
Invented (or Discovered) by an Indian, 'ZERO' is believed to be one of the 'Greatest Inventions' of all times! Recall that Roman numerals don't have any 0!
Ever thought of what exactly is '0' all about?
It possess some peculiar an remarkable characteristics:
=> Only number which is neither +ve nor -ve!
=> Neither prime nor composite!
=> Multiply or divide by anything and it doesn't get affected!
=> Anything raised to 0 is 1 !
=> 0 raised to anything is 0 !
=> 0^0 is not defined!
=> Division by 0 is 'infinity' !
=> 0! is 1 (suprising)!
'0' is not mere an 'absence' of everything but its a 'presence' of everything!
Observe its notation carefully.. Its almost a circle.. A circle enclosing everything!
It starts where all things end and ends where everything starts!
'infinity' is its close relative (see above)! We can't count 0 but so we can't 'infinity'!!
Something which doesn't exist but is always there...
It doesn't have a 'value' but is often valued the most!
Much more can be said about 0...
In short.. Zero is the real Hero!
It should probably be called ZHero!!
#679 This is Cool » Divisibility test for 7 & 13... » 2008-07-19 09:58:57
- ZHero
- Replies: 7
Here's an interesting 'divisibility test' for 7 & 13 i came across; but, sadly, is applicable to numbers with more than 3 digits only!
Divide the number into groups of 3 (starting from Right) and find the difference between the sum of the numbers in odd and even places.. If the difference is '0' or a multiple of 7 or 13 (as the case may be), its divisible by it!
e.g. 4537764
==> 4 537 764
==> (764+4) - (537)
==> 231= 7*33 ! Hence divisible!
#680 Re: Puzzles and Games » Series.. » 2008-07-17 23:41:43
You're right mathsyperson!
Its a multiple choice question with 5 options (fractions) and the solution is given as 'Don't try to solve it! Find the approx decimal values of choices and choose the one with the nearest approx decimal value of the given series...' which again, i believe, is not an easy job!!
#681 Re: Help Me ! » Handle.. » 2008-07-17 23:30:48
Oh, there's nothing wrong with this handle!
I LLLLOVE it 
Was just a bit curious!
#682 Re: Puzzles and Games » Series.. » 2008-07-17 07:47:09
Thanks mathsyperson!
I did follow the steps but was wondering why this question has been put on the '30 second questions' sections in the book that i'm reading for an 'entrance exam preparation'!?
Great Job all the way.. Thanks again!
#684 Re: Puzzles and Games » Chess Puzzles » 2008-07-17 07:00:57
No answers for weeks...?
Anyways.. Here are the answers...
#685 Puzzles and Games » Series.. » 2008-07-17 06:47:12
- ZHero
- Replies: 5
How do I sum the following series to 'infinity'...?
#686 Help Me ! » Handle.. » 2008-07-17 06:41:57
- ZHero
- Replies: 4
I'd please like to know if I can change my 'handle' or not?
If 'yes', then how??
#687 Re: Jokes » More Jokes... » 2008-07-08 11:23:54
It was b'day of Mary's boyfriend John. She was too conscious of giving him a nice present that would always remind him of her.
So.. She bought a 'Talking Parakeet', taught it to speak 'John, I Love You!' and presented it to her boyfriend.
After two days, she called him and asked..
Mary: How did you like the bird?
John: Oh that parrot? T'was very tasty! Especially the leg part!
#688 Re: Jokes » More Jokes... » 2008-07-08 11:01:10
A man was playing chess with his dog when suddenly he's caught upon by his friend with suprise..
His friend: Wow! This seems to be a real 'Intelligent' dog.. Right?
Man: Mmmm.. Not quite. I've only won 4 out of 5 games!!
#689 Re: Help Me ! » distance rate and time » 2008-07-08 10:31:44
why is it when I try to find how long it will take to take a 156 mile trip, traveling 80 miles per hour. I get 1.95
please HELPthanks in advance
Lori
Your answer, no doubt, is correct!!
However, please note that 1.95hr = 1hr + 57mins !
#690 Re: Jai Ganesh's Puzzles » 10 second questions » 2008-07-08 06:22:52
Aaah!
Is 84. wrongly put in '10 second questions'?
May the author 'Ganesh' have some solution!
Calling out to Ganesh...
#691 Re: Jai Ganesh's Puzzles » 10 second questions » 2008-07-08 05:41:11
Sorry to bother you all once again but there's no other way for me to know...
84. How many digits does 100! contain?
85. And how many digits does 2^500 contain?
I did understand the solution to 85th but don't know how you get 84.?
The answer to 84. is given to be 158... How?
#692 Re: Puzzles and Games » Squares from sticks.. » 2008-07-08 02:44:10
How do you make four equilateral triangles with sides l, using 6 sticks with length l?
The answer, i believe, would be to make a regular 'TetraHedron' (on the same grounds as JaneFairFax)!
#693 Re: Jai Ganesh's Puzzles » 10 second questions » 2008-07-08 01:44:51
Thanks mathsyperson!
However, i was wondering if there are some 'common for all' rules which can be used to check for the conditions given above!?
For example, say the given numbers were 'actually' perfect square & prime (respectively), then??
#694 Re: Jai Ganesh's Puzzles » 10 second questions » 2008-07-08 00:12:27
(1) Is 1298045602 a perfect square?
(2) Is 6719247 a prime number?
would someone please tell me how to solve such problems 'mentally'??
#695 Re: Puzzles and Games » Squares from sticks.. » 2008-07-07 21:48:01
OMG!
This of course was easy!
But wasn't quite obvious/practical for me (was it?)!
Thanks JaneFairFox!
#696 Puzzles and Games » Squares from sticks.. » 2008-07-07 15:17:29
- ZHero
- Replies: 4
How do you make six squares, each of area
, out of twelve given sticks each of length ??#697 Re: Puzzles and Games » A paradox » 2008-07-07 12:37:13
There was this barber who had a shop that had a sign that said one rule he shaved people who didn't shave themselves so here's the question.Did the barber shave himself?
Yes!!
But at his Home and not at his Shop!!!