I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Can you make four (4) nines (9) equal 100?

In the given picture, in how many ways can you read the word "Tiger"?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

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

What am I?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?