🧩🔁🎯U8 (Probability) Flashcardizz Review

Front

What is an Empty (or Null) Set?

Back

A set that contains no elements, denoted as {} or ∅.

Front

What is a Universal Set?

Back

A set that contains all possible elements for a particular discussion or problem. For example, the universal set of positive integers greater than 6 but less than 15 that are odd is {7, 9, 11, 13}.

Front

How many ways can 9 runners medal (Gold, Silver, or Bronze) in a race?

Back

504 ways.

Front

What is the definition of a Union Set?

Back

A set that contains all elements from two or more sets, combining them without duplicates.

Front

What is the definition of a Mutually Exclusive Set?

Back

Two sets that have no elements in common; the occurrence of one event excludes the occurrence of the other.

Front

What is the definition of an Intersection Set?

Back

A set that contains all elements that are common to two or more sets.

Front

How many males walk to work if the options are 80, 221, 34, and 141?

Back

34 males.

Front

What is the formula for calculating combinations?

Back

C(n, r) = n! / (r!(n - r)!), where n is the total number of items, and r is the number of items to choose.

Front

What is the formula for calculating permutations?

Back

P(n, r) = n! / (n - r)!, where n is the total number of items, and r is the number of items to arrange.

Front

What is the probability of an event?

Back

The likelihood of an event occurring, calculated as the number of favorable outcomes divided by the total number of possible outcomes.