Tips and Tricks to Solve Probability Questions -Important Formulas Probability
Probabilities of events which were based on the results of actual experiments. It can be applied to every event associated with an experiment which can be a repepated number of times.
Here we have provided important tips and tricks to solve Probabilities questions
Probability of an event : P(event) = Number of favourable outcomes/Total number of outcomes
If the probability of happening an event is x then the probability of not happening that event is (1-x).
For e.g., If the probability of winning a game is 0.4 then the probability of loosing it is (1-0.4) = 0.6
If the probability of finding a defective bulb is 3/7 then the probability of finding a non-defective bulb is (1-3/7) = 4/7.
Tips and Tricks to Solve Probability Questions
In a deck of playing cards, there are four types of cards :
♠ (Spades in Black colour) having A, 2,3,4,5,6,7,8,9,10,J,K, and Q total 13 cards
♣ (Clubs in Black colour) having A, 2,3,4,5,6,7,8,9,10,J,K, and Q total 13 cards
♥ (Hearts in Red colour) having A, 2,3,4,5,6,7,8,9,10,J,K, and Q total 13 cards
♦ (Diamond in Red colour) having A, 2,3,4,5,6,7,8,9,10,J,K, and Q total 13 cards
52 cards
Jack, King and Queen are known as ‘Face Cards’, As these cards are having some pictures on it. Always remember Ace is not a face card as it doesn’t carry any face on it.
If one coin is tossed the total number of outcomes is 2 either a Head or a Tail.
If two coins are tossed the total number of outcomes is 2 ×2 = 4
If three coins are tossed the total number of outcomes is 2 ×2×2 = 8
Similarly for Dice, In a single roll total number of outcomes are 6
If two Dices are rolled, a total number of outcomes is 6×6 = 36 questions based on the latest exam pattern.
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