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it was 26^5 * 10. Since you are allowed to repeat letters, you can pick any of the 26 letters, 5 times. Thus 26*26*26*26*26 or 26^5. Then it's 10 digits between 0-9 to choose from so it's 26^5*10. It was 7.5 since it was asking for the height of the triangle created by the two intersecting lines. That happened to be half of the distance of the width since of line F
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