Assuming you're referring to US bills, current denominations in use are
$1 (the most common)
$2 (the least common)
$5
$10
$20 (most often used in ATMs)
$50
$100
Before 1969 there were other, higher denominations including $500, $1000, $5000, and $10,000 but these were rarely used.
Older dollar bills are indeed still in circulation. US bills aren't removed from circulation until they wear out.
Old bills are taken out of circulation by central banks and replaced with new bills. This process is called demonetization. Old bills are typically collected by banks and then destroyed either by shredding or burning to prevent them from re-entering circulation.
The US made 100,000 dollar bills, but none of these were ever in circulation. They were made to be used between Federal Reserve Banks.
About one-third of the bills that they receive can not be placed back into circulation
About one-third of the bills that they receive can not be placed back into circulation
All U.S. bills currently in circulation are the same size.
Yes, they are in general circulation.
The US has never stopped making $2 bills. They are made but are rarely seen in circulation. These bills are legal tender and can be spent.
According to reports the Federal Government prints about 38 million bills a day. Almost 90 percent of the bills printed go to replace bills already in circulation or that have been taken out of circulation.
No one keeps exact track of the number of $2 bills in circulation from various counties. In the US the BEP estimates there are over 500 million American $2 bills in circulation but it's not physically possible to know how many have been lost / damaged / hidden...
Yes, Singapore uses them.
there are only 10 in the world, so i guess none