union of two events

If two sets are given, a set can be formed by using all the elements of the two sets. Such a collection is called the union of the given set..

S= {1,2,3,4,5,6}] If the event is set of elements less than 2, then E = {1} is a simple event 1) Simple Event: If an event has one element of the sample space then it is called a simple or elementary event..

If a trial results in n-exhaustive, mutually exclusive and equally likely cases and m of them are favourable to the occurrence of an event A, then the probability of the happening of A, denoted by P(A), is given by: P(A) = m/n. Important terms are 1. Statistical or Empirical Probab..

An event A is an impossible event. What is its probability? => P(A) = 3 or P(A) = 2 or P(A) = 0 or P(A) = 1..

Which one of these is an independent event? => Choose a necklace, put it on, choose another necklace. or Draw 2 blue cubes from a bag of 3 blue cubes and 4 yellow cubes. or Pick a marble. Replace it. Then pick another marble. or Select two men from a group of men and w..

Which of the following is a mutually exclusive event? => A card selected from a deck will be either a queen or a red. or A card selected from a deck will be either a black or a king. or A card selected from a deck will be either an ace or a king. or A card selected from a deck will be eit..

Which of the following events are not mutually exclusive? => drawing a 8 and a spade from a standard deck of cards or tossing a coin and rolling a number cube or rolling a 2 or 4 on a single roll of a number cube or rolling a 1 or 5 on a single roll of a number cube..

Which of the following are complementary events? => Getting a number that is a multiple of 2, or a number that is a multiple of 3, when a number cube is rolled. or Rolling a 6 and rolling a 5 or less on a die. or Picking a Jack or a spade from a pack of playing cards. or Getting..

Which of the following are complementary events? => rolling a prime or a composite number on a die or drawing a King or a diamond from a pack of cards or rolling an even number or a multiple of 3 on a die or rolling a prime number or rolling a 2 on a die..

CHRONOLOGY OF SIGNIFICANT EVENTS IN CELL BIOLOGY YEAR EVENT 1500 Jansen designed the first conpound microscope by containing two lenses. 1665 Robert Hooke examined a thin section of bottle cork and described the basic unit as 'cell'. ..