By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

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

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

What do you call a fish without an eye?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

By what process could you make a 'Tea-Table' into food?

Which is faster, Heat or Cold ? Explain.

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?