Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

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?

Forwards I am heavy, backward I am not. What am I?

Solve the equation in the image by looking at the pattern closely.

If your uncle’s sister is not your aunt, what relation is she to you?

In the figure that has been attached to this question, each digit represents a digit. The similar letters carry the same integer value. Can you expose the original digits?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

What four weights can be used to balance from 1 to 30 pounds?

How can you drop a raw egg from a height onto a concrete floor without cracking it?