What does 6 × 5 × 4 × 3 × 2 × 1 mean?

To understand what the above product means we need to know about factorials.

Answer: 6 × 5 × 4 × 3 × 2 × 1 can be represented as 6! and its value is equal to 720.

The factorial of a number is the function that multiplies the number by every natural number below it until 1. Symbolically, factorial can be represented as "!"

Explanation:

The factorial of a whole number 'n' is defined as the product of that number with every number till 1. For example, the factorial of 4 is 4 × 3 × 2 × 1, which is equal to 24. So, 24 is the value of 4! In the given case, 6 × 5 × 4 × 3 × 2 × 1 can be written as 6! and the value is equal to 720.

Hence, 6 × 5 × 4 × 3 × 2 × 1 can be represented as 6!