Question

what is 100factorial​

Answer 1

Hey dude,

For those who don't know what factorial is, 100! = 100 * 99 * 98 * … * 2 * 1. Ok, let's look at how trailing zeros are formed in the first place. A trailing zero is formed when a multiple of 5 is multiplied with a multiple of 2. Now all we have to do is count the number of 5's and 2's in the multiplication.

@AzzyLand

Answer 2

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