If six children and two dogs were under an umbrella, how come none of them got wet?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

The centre of the third figure is empty. What digit should fit inside?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Using eight eights and addition only, can you make 1000?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

What is the next shape from answers A, B, C, and D figure?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

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?