Can you find the thief by just looking at the picture below?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

What is the Surname of Barbie Doll?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Can you count the number of squares in the figure below?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

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?

If 1+9+8=1, what is 2+8+9?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.