My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

When it's bad luck to meet a black cat?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

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?

A man dies of old age on his 25 birthday. How is this possible?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What is always in front of you but can’t be seen?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211