Our product and our sum always give the same answer. Who are we?

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?

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?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

You need to remove two matchsticks to make the below equation true. Can you do it ?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Can you make a fire with just a single stick?

Which of the below owl is odd one out?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?