You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

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

To attend world science seminar, A famous chemist from Mexico visit
London. In the lab, the scientist was killed and his six assistants were under suspicion of killing the chemist.
Name of six assistants: Austin, Wayne, Dege, Oscaru, Lingard, and Rojo.
He left a note "76-20-44 79-16-22-7"

A local detective Jack was called to solve the case,

After reading the note, Jack instantly asked the police to arrest the murderers.

Who are the murderers?

What work can one never finish?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

A dying old man wants to divide his entire land between his only two sons. Since his only wish is to treat them as equal as both of them have been too good to him, he wants to divide his land equally between them. The problem is that the land is significantly irregular in shape and thus there is no choice of cutting them into two equal halves.

Can you help him divide the land in a manner that both of his sons will be happy?

What question can you never answer yes to?