# Tag: multiplication

Two shortest ways to prove that 0!=1 zero factorial

number of arrangements with elements repetition or with no repetition

factorial

Number of different Signals, number of different arrangements, multiplication principle

Trifling questions-solutions before entering chapter probability

Numbers of Different Numerals, Circular Permutation, With Repetitions

Permutation with replacement

How many ways can persons sit together? permutation condition

Fundamental Principle of Counting, an introduction to probability

Using tree diagrams to enumerate parallelable occurrence of an event