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?

I know a nine-letter word having only one vowel.
Do you ?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Count the number of triangles in the below picture?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Can you find the hidden animal in the picture below?

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?