There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

who is silent in the parliament?

Can you tell a 3D object that has just two surfaces?

Rearrange the letters in "new door" to make one word.

I have eight fingers and two thumbs but I do not live. What Am I?

How can one talk without saying a single word?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Can you count the number of lines in the below picture?

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.

Replace the question mark in the picture below.