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?

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 ?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

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

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Which alphabet letter is a question?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

What is the end of everything?