Can you identify the hidden rebus in the image below?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

What is the centre of gravity?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

What has hands, but can’t clap?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?