-

$4\times 4\times 4\times 4\times 4\times 4=4096$

$4\times 4=16$

$2\times 2\times 2\times 2\times 2\times 2=64$

$1000$

$24$

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Too many (216) different branches.

$25\times 3=75$

$5\times 3=15$

$1$

$16$

$215$

$3\times 2\times 12=72$

$144$

$3\times 2\times 7=42$

$20\cdot 20\cdot 20=8000$

$1\cdot 2\cdot 1=2$

$2\cdot 8\cdot 4=64$

$0$

There are $1\cdot 2\cdot 1+8\cdot 1\cdot 7+2\cdot 7\cdot 3+2\cdot 8\cdot 4=164$ outcomes for a price (if you can play for free).