How many significant figures are present in the following: 1.0.0042 2.

1.	How many significant figures are present in the following: 1.0.0042 2.5.012
Answer» are two significant FIGURES i.e 4and22.there are FOUR significant fig. i.e 5,0,1and2Explanation:1.if the no. is less than ONE,the zeros on the RIGHT of decimal point and to the left of FIRST non-zero digit are not significant.so,in first ques. three zeroes are not significant

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