Question

If for any event E, P(E) + P(Ē) = q, then the value of q² − 3 is :

For an event E, P(E) + P(Ē) = x, then the value of x³ – 3 is

A pair of dice is tossed. The probability of not getting the sum eight 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 |