If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

What am I?

People make me, save me, change me, raise me. What am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?