The 5*5 grid shown contains a collection of squares with sizes from 1*1 to 5*5. How many of these squares contain the black square?
+122 Well, let's take a deeper look.
It's in the \(5\times5\) square.
it's in all \(4\) of the \(4\times4\) squares.
it's in all \(9\) of the \(3\times3\) squares.
It's in \(4\) of the \(2\times2\) squares.
It's in \(1\) of the \(1\times1\) squares.
That would leave us with a total of \(\boxed{19}\) squares.
