Recent Riddles & Brain Teasers

What does the below image rebus riddle means ?

Find the missing number in the sequence below:

Why do Chinese men eat more rice than Japanese men do ?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

Can you spot the man between the coffee bean in the picture below ?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Can you make a six-letter word using the letters N, A and B ?

By using 'because' continuously three times, can you make an English statement ?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10