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Probability of happening of an event is always between 0 and 1.

The probability of 1 means the event always happens.
The probability of 0 means the event never happens.

Equally likely:
   The probability of 1/2 means the event has an equal chance of happening or not happening.  The event and its complement (of not occurring) are equally likely.

Newzealand cricket team is equally likely to win when it plays against South Africa.  I plan to go out in the hot Sun tomorrow for some work.  However, the chances of not going out are equally likely.

Less likely:
A probability value between 0 and 1/2 means the event is less likely to happen and its complement (event not occurring) has higher chance of occurring.
Bangladesh cricket team is less likely to win the match when they play against India.  It is less likely that there is a rain during the month of March.

More likely
  A probability value of an event between 1/2 and 1 means the event is more likely to happen.
It is more likely that the trains and flights arrive and depart within 10 minutes of their scheduled times.  It is more likely that I score more than 90% in my examinations.

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ok thanks
if H and T near each other as you toss more and more times, then it is called an perfect unbiased fair coin. Otherwise it is called a biased coin.
oh wow thanks is the ame way for dice also
yes. for dice, the number of occurrences of each number should near each other as we roll them more and more times... then it is called an unbiased fair die.
thanks alot u helped me alot sir better than my mam