Question
Which pencil makes the darkest line?
4B
9B
6B
5B
4B
9B
6B
5B
Answers
GPT-4o mini
The pencil that makes the darkest line among the options given is the **9B** pencil.
Pencil leads are graded on a scale that indicates their hardness and darkness, with "B" pencils being softer and producing darker marks than "H" pencils, which are harder. The higher the "B" number, the softer the pencil, and thus the darker the line it can produce. Therefore, a 9B pencil will create a darker line compared to 4B, 5B, and 6B pencils.
Pencil leads are graded on a scale that indicates their hardness and darkness, with "B" pencils being softer and producing darker marks than "H" pencils, which are harder. The higher the "B" number, the softer the pencil, and thus the darker the line it can produce. Therefore, a 9B pencil will create a darker line compared to 4B, 5B, and 6B pencils.