Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

What month of the year has 28 days?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Can you find the hidden animal in the picture below?

Imagine you are in a room with no windows or doors. How will you get out?

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

What is the next number in this series?

4,12,84,3612....