In particular, the double spending problem means that the developers of a virtual currency must prevent users from being able to spend their funds more than once. So I now have one regular 2015 coin, one identical-looking double-head, and one identical-looking (and same date) double tail. The double spending problem is a security concern specific to digital cash and cryptocurrency projects. And YAY! Within a couple of days, my new coin has arrived, this time, correctly, the double-tail version (dated 2015, which is perfect as that is the same date as my regular coin I chose as a close match to the original (erroneously supplied) double-head one. But given the new evidence we have from the flip - it came up tails - you could be 100 certain of having the fair coin, since the double sided coin only has heads.

Before tossing it, you would be correct in saying there's a 1/2 chance you're holding the fair coin. Finally, I decided to try again to get my originally-requested 'Two Tails' coin, so I re-ordered. Consider the opposite scenario - the coin comes up tails when flipped. Not a problem in itself, but if I decide to buy the 'other half', I'd like to be sure it really IS tails next time round!ĮDIT. The only issue (but I won't take a star off my five rating), is that my double-TAILED order is actually double-HEADED. To learn more about how and for what purposes Amazon uses personal information (such as Amazon Store order history), please visit our Privacy Notice.īeautifully made - you seriously cannot see how two half coins have been combined. You can change your choices at any time by visiting Cookie Preferences, as described in the Cookie Notice. Hint: We are given in the question that a two-sided coin is not the Sholay coin it means the coin doesnt have a head on both sides. Click ‘Customise Cookies’ to decline these cookies, make more detailed choices, or learn more. Im going to assume the question was something like, A jar has 1000 coins, of which 999 are fair and 1 is double-headed. Third parties use cookies for their purposes of displaying and measuring personalised ads, generating audience insights, and developing and improving products. If an angel coin still has most of the details intact, it may cost around 4.

The fact that the coin is rare automatically grants it some monetary value. It may be a little tricky to find out about the double-sided guardian angel coin’s numerical value. There was a problem subscribing you to this newsletter. The gold coin with an angel on both sides worth is not so direct. This includes using first- and third-party cookies, which store or access standard device information such as a unique identifier. Decision maker coin,Decision making coin,Personalised Gift,Anniversary Gift,Decision Coin Gamer,Double sided coin,Custom fun coin,Birthday (11.8k) Sale Price 9.99 9.99 24.98 Original Price 24.98. If you agree, we’ll also use cookies to complement your shopping experience across the Amazon stores as described in our Cookie Notice. We also use these cookies to understand how customers use our services (for example, by measuring site visits) so we can make improvements. We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences and to provide our services, as detailed in our Cookie Notice.

Double sided coin problem