$$4 \cdot 1 = 2 \cdot ( 2 \cdot 6 \cdot 4 ) \cdot 18 \cdot 2 = 16$$
$\text{false}$
$$4=2\times 2\times 6\times 4\times 18\times 2\text{ and }2\times 2\times 6\times 4\times 18\times 2=16$$
$$4=4\times 6\times 4\times 18\times 2\text{ and }2\times 2\times 6\times 4\times 18\times 2=16$$
$$4=24\times 4\times 18\times 2\text{ and }2\times 2\times 6\times 4\times 18\times 2=16$$
$$4=96\times 18\times 2\text{ and }2\times 2\times 6\times 4\times 18\times 2=16$$
$$4=1728\times 2\text{ and }2\times 2\times 6\times 4\times 18\times 2=16$$
$$4=3456\text{ and }2\times 2\times 6\times 4\times 18\times 2=16$$
$$\text{false}\text{ and }2\times 2\times 6\times 4\times 18\times 2=16$$
$$\text{false}\text{ and }4\times 6\times 4\times 18\times 2=16$$
$$\text{false}\text{ and }24\times 4\times 18\times 2=16$$
$$\text{false}\text{ and }96\times 18\times 2=16$$
$$\text{false}\text{ and }1728\times 2=16$$
$$\text{false}\text{ and }3456=16$$
$$\text{false}\text{ and }\text{false}$$
$$\text{false}$$
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