Now - I'm British but... 4 quarters, 2 dimes and 4 cents are the minimum number of coins you would need to make $1.24 - a total of 10 coins.
More:
Because the question asks for the minimum number of coins, you want to use the largest number of the largest possible denomination to make up the total amount without exceeding the total. That is,
The minimum number of quarters, pennies, and nickels needed to make up 123 cents is 4 quarters, 4 nickels, and 3 pennies.
It depends on the economy, they make as many as needed.
There are 181 pennies per pound 2000 x 181 = 362,000 or $3620
More information is needed. You have to know how many of each coin are in the sample set in order to determine a probability of selecting any particular coin or combination of coins. Please post a new, separate question with that information.
More information is needed. Please post a new, separate question stating how many nickels you save each week.
The minimum number of quarters, pennies, and nickels needed to make up 123 cents is 4 quarters, 4 nickels, and 3 pennies.
Three quarters and a dime or two nickels. There are other combinations as well, such as 85 pennies.
2 quarters, 3 dimes, 1 nickel, 3 pennies. I worked it out by knowing that 3 pennies would be needed for sure (to get from 85 to 88), but not 8 pennies, since there's no 80 cent coin. Then just started working it out with quarters, then seeing how many dimes, and then nickels would work out to the six remaining coins.
Simple answer: No dimes, nickels, quarters or half dollars were needed in 1922. The economy was slow so the government did not make any.
More information is needed. Please post a new, separate question giving the total number of cents.
200,000 nickels are needed
20 nickels = $1.00
All Nickels, Quarters, Half Dollars and Dollar US coins dated 1900 have the motto E PLURIBUS UNUM on them, a denomination is needed.
A nickel is 5 cents. $2.75 is 275 cents. 275 / 5 = 55 nickels.
US nickels made from 1866 to mid-1942 and from 1946 to the present are made of a copper-nickel alloy, not silver. From mid-1942 to 1945 nickels did contain a small amount of silver because nickel metal was needed for the war effort. Those "war nickels" are the ONLY ones that have any silver in them. Because dimes, quarters, and halves contained silver up till 1964 many people erroneously believe that nickels did, too. But after all, the coin is called a nickel because it's partly made of nickel!
The question is actually "which years" rather than "which year".Nickels:Contrary to popular misunderstanding, nearly all US nickels are made of an alloy of 25% nickel and 75% copper. The ONLY nickels that ever contained silver were special "war nickels" minted from late 1942 to 1945. War nickels were made of an alloy of 56% copper, 35% silver, and 9% manganese because nickel metal was needed for the war effort. These coins are distinguished by a large mint mark letter over the dome of Monticello on the back.Dimes and quarters:1964 was the last year for silver dimes and quarters. Starting in 1965, those two denominations were changed to the current cupronickel-clad composition.Half dollars:Until 1964, halves were made of the same 90% silver alloy as dimes and quarters. From 1965 to 1969 they were made of 40% silver. None were minted for circulation in 1970. Starting in 1971, they were changed to the same clad metal used for dimes and quarters.
Rough estimation here, but about 3 rolls of pennies. So..150 pennies.