A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

What seven-letter word has hundreds of letters in it?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?