A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

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?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

Why Wine Glass Stem is so long?

What's a single-digit number with no value?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1