What goes up but never comes down?

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

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

When we see 2 but call 10?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Count the number of squares in the picture below.