What are Raina and Jadeja?

(b) Check whether the set of integers is countable or not.... | Filo

SOLVED:If A and B are two countable sets, prove that the set consisting of all elements from A or B (or both) is also countable. Since A is countable, there is a 1-1 correspondence between elements of A and the natural numbers so that we can denote these elements by a1, a2, a3, …Similarly, we can denote the elements of B by b1, b2, b3, …Case 1: Suppose elements of A are all distinct from elements of B. Then the set consisting of elements from A or B is countable, since we can establish the follo

Determine whether each of these sets is countable or uncountable. For those that are countably infinite, exhibit a one-to-one correspondence between the set of positive integers and that set. a) all bit strings not containing the bit 0 b) all positive rational numbers that cannot be written with denominators less than 4 c) the real numbers not containing 0 in their decimal rep- resentation d) the real numbers containing only a finite number of Is in their decimal representation | Numerade

Free Countable And Uncountable Nouns Flashcards | Games4esl