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Three measurements are, a= 25.6, b=21.1 ...

Three measurements are, a= 25.6, b=21.1 and c=2.43. Find the value a-b-c to correct significant figures.

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The correct Answer is:
A, B
`a-b-c = 25.6-21.1-2.43`
= 2.07 = 2.1 .
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