Q.

The respective number of significant figures for the numbers 23.023; 0.0003 and   2.1 x10-3are respectively

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a

5,1,2

b

5,1,5

c

5,5,5

d

5,4,5

answer is A.

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Detailed Solution

23.023 significant is 5 decimal no  in between zero are significant0.0003  significant figure is 1 starting zeros in decimal no are not significant   2.1x10-3 significant figure is 2 poer of 10 are not considered as significant
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