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(A) To determine the number of significant figures,we follow these rules:$1$. All non-zero digits are significant.$2$. Zeros between non-zero digits a

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$A, C$ and $D$ only

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(A) To determine the number of significant figures,we follow these rules:$1$. All non-zero digits are significant.$2$. Zeros between non-zero digits are significant.$3$. Leading zeros are not significant.$4$. Trailing zeros in a number with a decimal point are significant.Analysis of the given values:- $0.00253$: The leading zeros are not significant. The significant figures are $2, 5, 3$. Total $= 3$.- $1.0003$: Zeros between non-zero digits are significant. Total $= 5$.- $15.0$: Trailing zeros in a decimal number are significant. Total $= 3$.- $163$: All digits are non-zero. Total $= 3$.Thus,$A, C,$ and $D$ have $3$ significant figures each.Therefore,the correct option is $A$.

List-$I$	List-$II$
$(1)$ $10^{-15}$	$(A)$ Peta
$(2)$ $10^{2}$	$(B)$ Centi
$(3)$ $10^{-2}$	$(C)$ Tera
$(4)$ $10^{12}$	$(D)$ Femto
$(5)$ $10^{15}$	$(E)$ Hecto

Which of the following have the same number of significant figures?
$(A)$ $0.00253$
$(B)$ $1.0003$
$(C)$ $15.0$
$(D)$ $163$
Choose the correct answer from the options given below:

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List-$I$ List-$II$

$(1)$ $10^{-15}$ $(A)$ Peta

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Which of the following have the same number of significant figures?$(A)$ $0.00253$$(B)$ $1.0003$$(C)$ $15.0$$(D)$ $163$Choose the correct answer from the options given below: