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?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What goes through cities and fields, but never moves?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

How many times can you subtract the number 5 from 25?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

who is silent in the parliament?

I have teeth but i don't bite. Who Am I ?