1000
600
The answer is 600
Kelvin to centigrade, just subtract 273.15 13 600 000 - 273.15 = 13 599 726.85 C but if significant figures count then the answer is 13.6 million C
To 3 significant digits, it is about 7.74. If you want to get closer, 7.739509 is closer without going over, but not exact.
One day is equal to 60 x 60 x 24 = 86400 seconds. Therefore, rounded to three significant figures, 599 seconds is equal to 599/86400 = 0.00693 days.
599.0
1000
600
600
184.000
The answer is 600
Kelvin to centigrade, just subtract 273.15 13 600 000 - 273.15 = 13 599 726.85 C but if significant figures count then the answer is 13.6 million C
600
It could be 599, rounded to the nearest 400.
The number is already rounded to a greater extent than either of those levels!
It is 600 in both cases.