You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

Prove that twice of ten is the same as twice of eleven.

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What brings you down but never up?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

why number 8549176320 is one of a kind?

You need to arrange three 7 and mathematical symbols to form number 1?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

By what process could you make a 'Tea-Table' into food?