What is wrong in the below Picture?

Can you write down eight eights so that they add up to one thousand?

No matter how little or how much you use me, you change me every month. What am I?

I am quite hot but become too cold if you remove the first two letters. What am I?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

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?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Can you find out who is the kidnapper in below Picture and why, Explain ?

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