deletions | additions       diff --git a/a) Number of blits.tex b/a) Number of blits.tex  index b01d18a..f57d698 100644  --- a/a) Number of blits.tex  +++ b/a) Number of blits.tex 
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\begin{split}  T(2^n) &= \sum_{i = 0}^{n-1} \left[5 \cdot 4^i\right]\\  &= 5\sum_{i = 0}^{n-1} \left[4^i\right]\\  &= 5\frac{1 - 4^n)}{1 4^n}{1  - 4}\\ &= (5 - 5 * 4^n)/(-3)\\  &= (5 * 4^n - 5) / 3\\  \end{split}