What is probability?

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Swati Datta

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Probability is a branch of mathematics that deals with calculating the likelihood of a given event's occurrence, which is expressed as a number between 1 and 0. An event with a probability of 1 can be considered a certainty: for example, the probability of a coin toss resulting in either "heads"...
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Probability is a branch of mathematics that deals with calculating the likelihood of a given event's occurrence, which is expressed as a number between 1 and 0. An event with a probability of 1 can be considered a certainty: for example, the probability of a coin toss resulting in either "heads" or "tails" is 1, because there are no other options, assuming the coin lands flat. An event with a probability of .5 can be considered to have equal odds of occurring or not occurring: for example, the probability of a coin toss resulting in "heads" is .5, because the toss is equally as likely to result in "tails." An event with a probability of 0 can be considered an impossibility: for example, the probability that the coin will land (flat) without either side facing up is 0, because either "heads" or "tails" must be facing up. In its simplest form, probability can be expressed mathematically as: the number of occurrences of a targeted event divided by the number of occurrences plus the number of failures of occurrences (this adds up to the total of possible outcomes): p(a) = p(a)/[p(a) + p(b)] Calculating probabilities in a situation like a coin toss is straightforward, because the outcomes are mutually exclusive: either one event or the other must occur. Each coin toss is an independent event; the outcome of one trial has no effect on subsequent ones. No matter how many consecutive times one side lands facing up, the probability that it will do so at the next toss is always .5 (50-50). read less
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Expert Home online tutor in maths science 11th and 12th, all subjects till 10th

Probability is a chance or percentage of chance. for eg 1 bulb is fuse out of 10 in a box. In one go what is the probability to get out the fuse bulb from the box. the solution is quiet simple: the probability is 1/10 or 10% or .10
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All subjects (upto 8th),Maths & Science (9-10th)

Probability is the chance of occurrence of an event out of all fair possibilities. Here fair means, a particular event is not forced to occur.
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Tutor

The extent to which an event is likely to occur, measured by the ratio of the favourable cases to the whole number of cases possible.
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Tutor

Example: What is the probability to get a 6 when you roll a die? A die has 6 sides, 1 side contain the number 6 that give us 1 wanted outcome in 6 possible outcomes.
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math magician & computer wizard

The probability of an event refers to the likelihood that the event will occur.
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math magician & computer wizard

The extent to which an event is likely to occur, measured by the ratio of the favourable cases to the whole number of cases possible.
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Teacher

Probability is the measure of likelihood that an event will occur
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