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How many significant figures are present...

How many significant figures are present in the following?
a. 0.0025
b. 208
c. 5005
d. 126000
e. 500.0
f. 2.0034

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The correct Answer is:
(i) 2 (ii)3 (iii) 4 (iv) 3 (v) 4 (vi) 5
(i) 0.0025
there are 2 significant figures
(ii) 208
there are 3 sigificant figures .
(iii) 5005
(iv) 126,000
there are 3 significant figures .
(v) 5000.0
there arae 4 significant figures.
(vi) 2.0034
there are 5 sinnificant figures.
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