Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

What is at the end of a rainbow?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

I add 5 to 9 and get 2. The answer is correct, so what am I?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

The centre of the third figure is empty. What digit should fit inside?