54000
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0.26
7000.
It is 77 because you round 5 to 0, and round 6 to 7.
There are two significant figures in 0.025.
To round 0.03241 to 2 significant figures, we must consider the first two non-zero digits, which are 3 and 2. The digit after 2 is 4, which is less than 5, so we round down. Therefore, 0.03241 rounded to 2 significant figures is 0.032.