Venn Diagrams | Set

Subsets of the set R of real numbers Following sets are important subsets of the set R of all real numbers:        (i)  The set of all natural numbers N = { 1, 2, 3, 4, 5, 6,…. }      (u)  The set of all integers Z =  { … – 3, – 2, -1,…

 The Sea Guardians, the maritime variant of the Predator MQ-9s are actually what that were recently inducted into the Indian Navy? Q2 – The Sea Guardians, the maritime variant of the Predator MQ-9s are actually what that were recently inducted into the Indian Navy? Answer – Drones Q1 – In the first week of December 2020, the…

SI (System of international) system of units The SI system consists of seven basic units and two supplementary units. These are represented in table 1 . The unit for other quantities are derived from the basic units which are given in table 2. It is convenient to use prefix to avoid the use of very…

Domain of relation Let R be a relation from a set A to a set B. Then the of all first components or coordinates of the ordered pairs belonging to R is called the domain of R. Thus, domain of R = { a : (a, b) ∈ R} Clearly, domain of R ⊆  A…

Function as a set of ordered pairs     Let  A and B be two non-empty sets. A relation f from A to B i.e   a subset of A × B is called a function (or a mapping or a map) from A to B, if i) for each a ∈ A there  exists b ∈ B…

Complement of a set Let U be the universal set and let A be a set such that A ⊂ U. Then the complement of A with respect to U is denoted by A’ or Ac or U-A and is defined the set of all those elements of U which are not in A. Thus…