Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Three cars are driving on a track that forms a perfect circle and is wide enough that multiple cars can pass anytime. The car that is leading in the race right now is driving at 55 MPH and the car that is trailing at the last is going at 45 MPH. The car that is in the middle is somewhere between these two speeds.
Right now, you can assume that there is a distance of x miles between the leading car and the middle car and x miles between the middle car and the last car and also, x is not equal to 0 or 1.
The cars maintain their speed till the leading car catches up with the last car and then every car stops. In this scenario, do you think of any point when the distance between any two pairs will again be x miles i.e. the pairs will be x distance apart at the same time ?

What type of tree can I carry in my hand?

What kind of tree can you carry in your hand?

81 x 9 = 801. What must you do to make the this equation true?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

How can you take 2 from 5 and leave 4?