What is the next number in this matchsticks series riddle?

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

I am an odd number. Take away a letter and I become even. What number am I?

In the given picture, in how many ways can you read the word "Tiger"?

I am Huge on Sunday and Saturday.
I am small from Tuesday to Thursday.
I do not exist on Monday and Friday.
Who am I?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Take one out and scratch my head, I am now black but once was red. What am I?

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.