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Question

How many significant figures are there in 0.30100?

A
1
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B
3
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C
5
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D
none of these
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Solution

The correct option is D 5As per the following rules of significant numbers: 1) ALL non-zero numbers (1,2,3,4,5,6,7,8,9) are ALWAYS significant.2) ALL zeroes between non-zero numbers are ALWAYS significant.3) ALL zeroes which are SIMULTANEOUSLY to the right of the decimal point AND at the end of the number are ALWAYS significant.4) ALL zeroes which are to the left of a written decimal point and are in a number are ALWAYS significant.Hence in given number i.e. 0.30100According to the rule 1 and rule 3, the total significant numbers are 5.

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