If an electric train is travelling south, then which way is the smoke going?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

Find the missing number in the series below

13 -21 34 -55 ? -144

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

Can you count the number of quadrilaterals in the picture below?

What word is represented by this rebus?

How many times in a given day, minutes and hour clock comes in a straight line ?

What word does this rebus represent?

meta meta
meta meta

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Fate has decided that you will only be pleased to meet me when you need me

Maybe that is why, when I am working, I start working

However annoying I may be to the regulars, the little ones are always inspired

I will always be waiting if you try to reach me

How many of you can guess my name, let me see