There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

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

What brings you down but never up?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

There is something which is always coming but never arrives?

What has lots of eyes, but can’t see?