In which direction should the missing arrow point?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

Remove two matchsticks to make the below equation correct.

Find the next number in the series below

21 32 54 87 131 ?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

What is so fragile that saying its name breaks it?

What is more useful when it is broken?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?