An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

Find the number of squares in the below picture

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

What does a man do only once in his lifetime, but women do once a year after they are 29?

You can hear me, but you can't touch or see me.

What am I?

Can you find a rabbit in the given picture?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

Can you identify the hidden rebus in the image below?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?