Can you solve the below tricky visual equation?

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?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

When is the top of a mountain similar to a savings account?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

Find the missing number in the image below.

What has 13 hearts but no other organs?