Adam had 3

Adam had paper which was so large that several tens of thousands of pieces could be torn from it. First he tore the paper into four pieces. Each of these pieces he took and tore either into four or into ten pieces. In the same way he continued further: each newly arisen piece he tore either into four or into ten smaller pieces.

Decide and explain whether Adam can in this way tear exactly 20 000 pieces.

Result

x=

Yes

No

Step-by-step explanation:

$$\begin{gathered} 20000=2\times 2\times 2\times 2\times 2\times 5\times 5\times 5\times 5 \\ 20000=2^5\times 5^4 \\ 20000=10^4\cdot 2 \\ 20000=10^3\cdot 4\cdot 2 \\ x=0 \end{gathered}$$

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