Find the next number in the series below

21 32 54 87 131 ?

Why is the Hole below a Lock?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

What goes up but never comes down?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?