Kemija - 2009./10. ljeto - 40.

$6\cdot {10}^{23}6\; \backslash cdot\; 10^\{23\}$

$1,2\cdot {10}^{24}1,2\; \backslash cdot\; 10^\{24\}$

$1,8\cdot {10}^{24}1,8\; \backslash cdot\; 10^\{24\}$

$2,4\cdot {10}^{24}2,4\; \backslash cdot\; 10^\{24\}$