You need to arrange three 7 and mathematical symbols to form number 1?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

What is so fragile that saying its name breaks it?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.