# Probability of 3 letters With Repetition are Vowels

This video explains how to determine the probability that 3 randomly typed letters with repetition are all vowels.

# Probability of 4 letters With No Repetition are Vowels

This video explains how to determine the probability that 4 randomly typed letters without repetition are all vowels.

# Probability of 3 letters With No Repetition are Vowels

This video explains how to determine the probability that 3 randomly typed letters without repetition are all vowels.

# Probability of 6 Letters With No Repetition

This video explains how to determine the probability that 6 randomly typed letters have no repetition.

# Combinations: The Number of 3 Member Committees from 34 People

This video explains how to determine the number of groups of 3 can be formed from 34 people.

# Counting: The Number of 4 Letter Codes from 6 Letters with Various Conditions

The video explains how to determine the number of 4 letter codes using 6 letters under various conditions.

# Zero Factorial: Why is 0! = 1?

This video provides justification as to why 0!=1 using patterns and the meaning of a permutation.