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**Cursed** **I keep getting an error every time I try to do calculations with large numbers. I was wondering if there was another way to do these problems or a way to simplify them. As you can see, with smaller numbers I can put them into my calculator and get an answer:**

If you flip a coin 50 times, what is the chance you will get 25 heads?

$\displaystyle \frac{n!}{h!(h-n)!}(2^n)$

$\displaystyle \frac{50!}{25!(50-25)!}(2^{-50}) = 0.11275$

**But if I do a problem like this, I get the "OVERFLOW" error on my calculator and I can't do it:**

If you flip a coin 100 times, what is the chance you will get 50 heads?

$\displaystyle \frac{n!}{h!(h-n)!}(2^n)$

$\displaystyle \frac{100!}{50!(100-50)!}(2^{-100}) = ?$

**Is there another way to calculate the answer for the second problem so I don't get "OVERFLOW" in my calculator every time I try to do it?**