I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?