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?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

What Deficiency does the below rebus represent?

VIT_MIN

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?