What has many teeth, but cannot bite?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

How far can you walk into the woods?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

What will you call your mother's brother's brother-in-law?

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

In the image given, you can find several triangles. Can you count them all?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?