The probability example :
Let we have a dice what is the probability to get even number ?
So, we know the number on the dice are 1 , 2 , 3 , 4 , 5 and 6
So, the total possible numbers are 6
We need to get even number, the even numbers on the dice are 2 , 4 and 6
So, there are 3 numbers are even
So,
the probability = ( the total even numbers) / ( total outcomes ) = 3/6 = 0.5
So, the probability to get even number when we roll a dice is 0.5
The probability is varied form 0 to 1
where 0 is impossible to happen
And 1 is the certinty to happen