Question

41. If n (A) = 19 and n(B) = 13, the least number of elements in the set ANB is
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Answer 1

:Sets A set is a well-defined collection of objects. The objects in this collection are called elements of

the set. If a is an element of the set A then we write a 2 A, if a is not an element of a set A, then we

write a /2 A.

Roster and Set-Builder Notation

Roster notation will be used most commonly in this class, and consists of listing the elements of a set

in between curly braces. Set-builder notation is when a rule is used to define a definite property that

an object must have in order to be in the set.

1. Let A be the set of all letters in the English alphabet.

(a) Write A in roster notation and in set-builder notation.

Step-by-step explanation:

Answer 2

Answer:

0

Step-by-step explanation:

here they asked that least when we take different elements in two set we get n(ANB) as 0 so 0 is least