$9$

Consider the $3$ tree below, which operation on tree $1$ would produce tree $2?$

Rotate right at node $82$

Rotate right at node $66$

Rotate left at node $66$

Rotate left at node $39$

$10$

Consider the $3$ tree below, which operation on tree $3$ would produce tree $2?$

Tree $1$

Tree $2$

Iree $3$

Rotate left at node $41$

Rotate left at node $66$

Rotate left at node $39$

Rotate left at node $21$