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State the number of significant figures ...

State the number of significant figures in the following
(a)`0.007 m^2` (b)`2.64 xx 10^(24)kg` (c) `0.2370 g//cm^-3`

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Number of significant figures is (i) 1 (ii) 3 (iii) , (iv), (v) and (vi) 4 each
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ICSE-UNITS-MODULE 3 (SELECTED PROBLEMS)
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