To 2 significant figures it rounds to 2.5.
To a whole number it rounds to 2 (as it is less than 2.5 and is therefore closer to 2 than it is to 3).
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250
200 and 250 respectively.
The reciprocal of -247 is -1/247(Because -247 = -247/1
74.130% of 247= 30% * 247= 0.30 * 247= 74.1
50% of 247= 50% * 247= 0.50 * 247= 123.50