Uhh nerdy time lmao
Why 2 + 8! + 6!! = 2.6012189435657951002049032270810436 × 10¹⁷⁴⁶
This expression might look simple at first glance, but the use of factorials and double factorials hides an immense amount of computation. The factorial symbol “!” represents repeated multiplication in descending order, while the double factorial “!!” skips every other number. The combination of both in a single formula leads to astonishingly large results once evaluated completely.
Let’s break it down step by step. The term 8!, known as “eight factorial,” equals the product of all integers from 1 to 8:
8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 40 320.
Next, 6!!, read as “six double factorial,” is the product of every second integer from 6 down to 2:
6 × 4 × 2 = 48.
So, if we naïvely computed 2 + 8! + 6!!, the answer would appear to be 40 370. However, the presence of multiple factorial symbols in mathematics can also imply iterated factorials, where the factorial operation is applied repeatedly