You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

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?

Why do you find that most of the buildings are deprived of the 13th floor?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

What is harder to catch the faster you run?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

'Ferrari driver' easily beats the 'force driver' in a two-car race. How did Indian newspapers truthfully report so to look as a 'force drive' had outdone the 'Ferrari driver'? Think!!!

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?