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May 23, 2008

What is the 9 digit number?

There is a 9 digit number.
Its speciality is no digit is repeated.
and its right 1 digit is divisible by 1 and
right 2 digits is divisible by 2,right 3 digits
is divisible by 3.This pattern will be repeated
until 9 digits.

find out the number.

May 13, 2008

The Missing Dollar Problem

Three friends went to a hotel. The bill was Rs $75
Each one contributed $25. The waiter took the bill to the cashier.
The cashier was happy & decided to give them a discount of
$5 and asked the waiter to return them $5.

Now the waiter was confused. How to distribute $5 among 3

He kept $2 in his pocket and gave $1 to each one
of the 3 persons. So initially each one had contributed
$25. Now as they are Given $1 back, their contribution
reduces to $24. They all contributed $24. ie
24x3=72 and 2 dollors are in the waiters pocket.
The total becomes $74. But they had paid $75.
Where is the remaining $1?