Question
Round this number to two significant figures.
72.8 mm
74 mm
73 mm
72 mm
73.0 mm
72.8 mm
74 mm
73 mm
72 mm
73.0 mm
Answers
GPT-4o mini
To round the number 72.8 mm to two significant figures, you look at the first two non-zero digits, which are 7 and 2. The digit following them is 8, which is 5 or greater, so you round up the last significant figure.
Therefore, 72.8 mm rounded to two significant figures becomes 73 mm.
The correct answer is **73 mm**.
Therefore, 72.8 mm rounded to two significant figures becomes 73 mm.
The correct answer is **73 mm**.