Download the Problem of Probability MCQs with Free PDF for PPSC, FPSC, PMS, NTS, KPKPSC, and SPSC exam
Probability is a branch of mathematics that deals with the likelihood of an event occurring. It is a measure of how likely it is that a particular outcome will happen. Probability is often expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.
For example, the probability of flipping a coin and getting heads is 1/2. This means that there is a 1 in 2 chance of getting heads. The probability of flipping a coin and getting tails is also 1/2.
Probability is used in many different areas, such as gambling, weather forecasting, and insurance. It is also used in many scientific fields, such as physics, chemistry, and biology.
There are two main types of probability:
- Classical probability: This type of probability is based on the idea of equally likely outcomes. For example, the probability of flipping a coin and getting heads is 1/2 because there are two equally likely outcomes: heads and tails.
- Empirical probability: This type of probability is based on the results of experiments or observations. For example, the probability of getting a heart from a standard deck of cards is 1/4 because this is the proportion of hearts in the deck.
There are also three main axioms of probability:
- The probability of an event occurring is between 0 and 1.
- The probability of the complement of an event (the event not occurring) is 1 - P(event).
- The probability of two independent events occurring is the product of the probabilities of the individual events.
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Here are some additional things to keep in mind about probability:
- Probability is not always exact. It is possible for an event with a low probability to occur, and it is possible for an event with a high probability to not occur.
- Probability can be used to make predictions about the future. However, it is important to remember that probability is not a guarantee.
- Probability can be used to make decisions. For example, a gambler might decide to bet on a particular outcome based on the probability of that outcome occurring.
Probability is a complex and fascinating subject. It is used in many different areas of our lives, and it is a valuable tool for understanding the world around us.
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