Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Move three sticks of the spiral below to form a square.

Today is a very icy and cold morning in Newcastle. Mr Shearer, an office bus driver arrived to pick up the employees from the last stop. Shearer suddenly remembers that he needs to pick a newly joined 4miles to the north. Mr Shearer lost his direction compass, a few minutes later Shearer is able to figure that he is moving in the correct direction i.e. north. How did Shearer know that he is moving in the correct direction?

What has hands, but can’t clap?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

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?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?