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

By moving just one matchstick, you need to make the below statement true. Can you do it?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

A blonde put eyeliner on her head. Why?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

Two men are in a desert. They both have packs on. One of the guys is dead. The guy alive has his pack open, and the guy who is dead has his pack closed. What is in the pack?

what does the below math rebus puzzle mean?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

Can you write down eight eights so that they add up to one thousand?