How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

Which is the smallest number that you can write using all the vowels exactly once?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

I have branches, but no fruit, trunk or leaves. What am I?