Find the value of "?" in the ball picture Riddle below:

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

When it is alive we sing, when it is dead we clap our hands. What is it?

Do You See It?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Role Action
Block Prevents the target player from acting
Redirect Change target player target.
Save Protects the target player from death.
Seer Sees all actions that occurred
Murderer Kills the target player

The following five players are playing:

Andy
Brian
Chris
Daniel
Fred

You are Andy the Seer and you saw the following things:
a) Brian was redirected to Chris.
b) Chris was blocked.
c) Daniel was killed.

Who is the murderer then?

What does the below image rebus riddle means ?