Kids must not do gambling till 18 years because they don't have thinking capacity or machur enof to take right decision. I do not recommend under 18 kids Gambling.
I think a child can handle gambling, but it's not advisable, as it will have an impact to them.. As far as I know, sometimes a kid has a mature decision even if they are under 18 years old and I also see child who can decide and talk more than a mature person can do..
I think gambling is not for small children because gambling requires a deposit and small children can not get money for betting. Gambling is more worthy done by those who are older because it takes money to make bets.
Yes they can, they can fund themselves from their allowance, and if their parents are funding them, which I think is not a good idea... I don't think parents would permit their children to gamble, that's weird if they do...