Answer:
(i) \[2\cdot 5\,\times
{{10}^{3}}\,g\]has two significant figures while\[2\cdot 50\,\times
{{10}^{3}}g\] has three significant figures. Hence, \[2\cdot 50\,\times
{{10}^{3}}g\] represents greater accuracy than\[2\cdot 5\,\times {{10}^{3}}\].
(ii) 160 has three significant figures while 160.0 has four significant
figures. Hence, 160.0 represents greater accuracy.
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