Depends on where (s)he wants to ride. On private property, special courses - yes.
On the road - Double No. Most Dirt bikes aren't road legal to start with. And even if they were, a 10-year old wouldn't get a license. And beyond a certain engine size/power, licences are required.
Yes but it would be very hard to turn around and sell it
Without a licence you ARE allowed to ride a motorised bicycle. Government of Australia.
Riding off-road on private property does not require a license - a driver's license is a license to drive on public roads.
No, of course you don't.
yes you can ride a bicycle.
You can always ride a bicycle, regardless of your driving license status.
No, you just get a bike and ride it.
bicycle
No, you are not required to be licensed to ride a bicycle, but if you are using the street, you are subject to the same traffic laws as a motor vehicle.
no because it is not a car and you need to be old enough to ride the bike on the street
Yes. There's no such thing as a "bicycle license". But do note that some roads(toll roads, freeways/highways, pedestrian zones in shopping areas, tunnels...) may be off-limits to cyclists.
Depends on the power of the motor. A bicycle can have a low-power motor and still be considered a bicycle, which don't require a license.
It is not necessary to have a driver's licence to ride a bicycle on the street in the US. You can be given tickets for violating traffic laws, and in some states you can be arrested for DUI while riding a bicycle.
17 but you can ride it without a license at 16 Im 12 and I ride it without one illegal but I do it.
Not on the street. You can take it off road on your own property all you want.
Yes as long as you aren't driving.