Q.
The result of which of the following has/have least significant figure(s)?
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a
0.02856×298.15×0.1120.5785
b
5×5.364
c
0.0125+0.7864+0.0215
d
All have same number of significant figures
answer is A.
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Detailed Solution
(a) In multiplication and division, the lease precise term 0.112 has 3 significant figures. Hence, the answer should not have more than three significant figures.(b) In multiplication, 5 is the exact number and the other number has 4 significant figures. Hence, the answer should have 4 significant figures.c) In addition the answer cannot have more digits to the decimal point than either of the original memebers. Hence, the answer should have 4 signficant figures.
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