Hint: Here in this question, we will show how to calculate the factorial of 5 and give the exact answer. Factorial of 5 means that we multiply 5 by every number below it. Therefore, we calculate the factorial of 5 by multiplying 5 by 4 and then by 3 and so on all the way down to 1. And further simplify using a multiplication operation to get the required answer.Complete step-by-step answer:The factorial is a quantity defined as any integer \\[x\\] greater than or equal to 0.The factorial is the product of all integers less than or equal to \\[x\\] but greater than or equal to 1. The factorial value of 0 is by definition equal to 1. For negative integers, factorials are not defined. The factorial can be seen as the result of multiplying a sequence of descending natural numbers.The factorial symbol is the exclamation mark ‘ \\[!\\] ’.In general, the factorial formula represented as If n is an natural number greater than or equal to 1, then \\[n! = n \\times \\left( {n - 1} \\right) \\times \\left( {n - 2} \\right) \\times \\left( {n - 3} \\right) \\times \\,\\,...\\,3 \\times 2 \\times 1\\] .If \\[p = 0\\] , then \\[p! = 1\\] by convention.Consider, the given questionWe have to find the value of factorial of 5.Before we begin, note that the factorial of 5 can be written as 5 followed by an exclamation mark like: \\[5!\\] For finding the exact value of \\[5!\\] that we multiply 5 by every number below it i.e., \\[ \\Rightarrow \\,\\,5! = 5 \\times 4 \\times 3 \\times 2 \\times 1\\] On multiplication, we get \\[ \\Rightarrow \\,\\,5! = 120\\] Hence, the exact value of factorial 5 is \\[5! = 120\\] .So, the correct answer is “120”.Note: Factorials are commonly used when calculating probability and permutations, or possible orders of events. A factorial is denoted by a \\[!\\] sign, and it means to multiply together all the numbers descending from the factorial number. And while solving factorials we must and should know the multiplication.