10+10 and 11+11 can give you the same answer.

Explain how?

Count the number of triangles in the given picture.

Which tank will fill first?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

You bought me for dinner but never eat me. What am I?

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?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

Can you spot the man between the coffee bean in the picture below ?

The more it dries, the wetter it becomes. Can you tell what it is?