Select the INCORRECT statement/s from the fol | vedclass

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Question

(B) Exact numbers like $22$ books have an infinite number of significant figures. This statement is correct.$(b)$ $2.5 	imes 1.25 = 3.125$. Since $2.

Vedclass · Accepted Answer

$b$ and $c$ only

Vedclass · Answer

(B) Exact numbers like $22$ books have an infinite number of significant figures. This statement is correct.$(b)$ $2.5 	imes 1.25 = 3.125$. Since $2.5$ has two significant figures and $1.25$ has three,the result should be rounded to two significant figures $(3.1)$. Thus,the statement that it has four significant figures is incorrect.$(c)$ Zeros preceding the first non-zero digit are not significant (e.g.,$0.0025$ has two significant figures). Thus,this statement is incorrect.$(d)$ $12.11 + 18.0 + 1.012 = 31.122$. In addition,the result should be reported to the same number of decimal places as the term with the fewest decimal places ($18.0$ has one decimal place). The result should be $31.1$,which has three significant figures. This statement is correct.Therefore,the incorrect statements are $(b)$ and $(c)$.

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