The area of a rectangle is 52 m2 , and the length of the rectangle is 5 m less than double the width. Find the dimensions of the
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There are 6 other positions in the string, each with 26 choices. So if you fix BO as the first two letters, there are 
possible strings that you can make.
If BO is at the end of the string, you still have possible strings.
Together, then, you have
possible strings.
If BO is at the end of the string, you still have
Together, then, you have