1.

A box has 5 books, each 20 mm thick and 5 cards each 0.016 mm thick. What is the total thickness?

A.  \[1.0008\times {{10}^{4}}mm\]
B.  \[1.008\times {{10}^{3}}mm\]
C.  \[1.0008\times {{10}^{2}}mm\]
D.  \[1.0008\times {{10}^{5}}mm\]
Answer» D.  \[1.0008\times {{10}^{5}}mm\]


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