What I learned new this week (week 16)

1. In Mathematics, factorial of 0 is 1. Here is how -

By defination, X! = X * (X-1)!
            Or X!/X = (X-1)!
for X = 1
    1!/1 = (1-1)!
    1/1 = 0!
Or  1 = 0!

2. If we make a sequence of all prime numbers then all the numbers at prime index(e.g., 3, 5, 7 etc) are called Super Prime number.

That’s it for this week. Meeting you next week.