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

There are seven sisters in a house in a village where there is no electricity or any gadget.

Sister-1: Reading Novel
Sister-2: Cooking
Sister-3: Playing Chess
Sister-4: Playing Sudoku
Sister-5: Washing clothes
Sister-6: Gardening

what is Sister-7 doing ?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

Who can jump higher than a Mountain?

The Little ant seems to be always confused. Do you know why?

Buy me, smell me or deliver me, I do not change.

Who am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

How can you tell a raw egg from a hard-boiled egg?

What has many teeth, but cannot bite?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?