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In an experiment of throwing a pair of dice, the probability of not getting a doublet is :
If E is an event such that P(E) = 0.1, then P(Ē) is equal to
Three coins are tossed together. The probability that at least one head comes up, is
If probability of happening of an event is 57%, then probability of non-happening of the event is
One of four main blood types can be found in a human body. They are known as A, B, AB and O. Each blood type can be further classified as either a Rhesus positive (+) or Rhesus negative (−).For example, a possible combination is blood type O and Rhesus negative which is written as O⁻ The data below shows the distribution of the blood types and Rhesus types of given blood type for a Blood Donation Center recorded (in percentages) for the year 2023. | BLOOD GROUP | RHESUS FACTOR | NUMBER OF PERSONS (in %) | |-------------|---------------|---------------------------| | O | O⁻ | x | | O | O⁺ | 30 | | A | A⁻ | 8 | | A | A⁺ | 24 | | B | B⁻ | 6 | | B | B⁺ | 18 | | AB | AB⁻ | 1 | | AB | AB⁺ | 3 |
A bag contains 3 red, 4 white and 7 green balls. A ball is drawn at random. The probability that the ball drawn is not of red colour is :
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