(1) $0.50
(2) $0.10
(3) $0.05
(15) $0.01
21 pennies
I'd say you can't. If all the coins are the smallest possible without pennies, they must all be nickels, and 21 of them make $1.05 . So in order for 21 coins to be not more than $1.00, there must be some pennies.
3 dimes 13 nickles 5 pennies
5 ways
To make $1.77 using 21 coins, you can combine different denominations of coins. For example, you could use 7 dimes (70 cents), 5 nickels (25 cents), and 9 pennies (9 cents), which totals $1.77 and uses exactly 21 coins. Adjust the number of each type of coin as needed to find other combinations that also meet the criteria.
21 pennies
You cant unless you have 100 pennies.
I'd say you can't. If all the coins are the smallest possible without pennies, they must all be nickels, and 21 of them make $1.05 . So in order for 21 coins to be not more than $1.00, there must be some pennies.
One dollar can be made by adding the values of the following 21 U.S. coins: 10 pennies (10 ¢) 7 nickels (35 ¢) 3 dimes (30 ¢) 1 quarter (25 ¢) There are also many other possible configurations including: 10 pennies (10 ¢) 4 nickels (20 ¢) 7 dimes (70 ¢) and 5 pennies (5 ¢) 13 nickels (65 ¢) 3 dimes (30 ¢)
3 dimes 13 nickles 5 pennies
26
To make a dollar using 25 coins, you would need a combination of quarters, dimes, nickels, and pennies. One possible combination could be 3 quarters (0.75), 2 dimes (0.20), 0 nickels, and 0 pennies. This totals $1.00. Another combination could be 2 quarters, 1 dime, 0 nickels, and 20 pennies. Each quarter is worth 0.25, each dime is worth 0.10, each nickel is worth 0.05, and each penny is worth 0.01.
Dime = 7 Nickel = 4 Penny = 10
5 ways
To make $1.77 using 21 coins, you can combine different denominations of coins. For example, you could use 7 dimes (70 cents), 5 nickels (25 cents), and 9 pennies (9 cents), which totals $1.77 and uses exactly 21 coins. Adjust the number of each type of coin as needed to find other combinations that also meet the criteria.
US $20 gold coins are made of 90% gold, which puts it at about 21 1/2 kt.
To make 21 cents, you can combine different coins. For example, you could use one quarter (25 cents) and take away four cents, or you could combine two dimes (20 cents) and one penny (1 cent). Alternatively, you can also use a combination of other coins like three nickels (15 cents) and six pennies (6 cents). The key is to ensure the total adds up to 21 cents.