How do you go from 98 to 720 using just one letter?

What can you see in the middle of March and April that you can never see in any other month?

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?

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

Next Number in the Series,

5, 16, 49, 104, ?

What is the coolest letter in the alphabet?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

How many words can a pen with half refill write?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

Give it food and it will live; give it water and it will die.