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2 votes
The question is a screenshot

The question is a screenshot-example-1

2 Answers

5 votes
B, because 45/21 = 2.142857143... And 2.142857143... × 7 =15mm

So it's B
User Data Monk
by
7.6k points
6 votes
if I remember correctly I think its B. 15 mm
User Nverinaud
by
8.3k points

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