4 pennies, 1 quarter, and a dime.
6
Three
Using standard American coins (1, 5, 10, 25 cents), the fewest number of coins to make $0.13 would be four -- one dime and three pennies. This number would be different in countries that use different denomination coins, such as the 2-cent piece.
To make 90 cents using the fewest number of coins, you can use one half-dollar coin (worth 50 cents) and two quarters (each worth 25 cents). This combination totals 90 cents. Alternatively, you could use nine dimes (each worth 10 cents) to make 90 cents. These are the two most efficient combinations to make 90 cents using coins.
Just one, a dime.
4 pennies, 1 quarter, and a dime.
Two coins
6
8 is the fewest number of coins needed between $0.01 and $0.49?
Three
Three coins; 50, 25, and 1.
Using standard American coins (1, 5, 10, 25 cents), the fewest number of coins to make $0.13 would be four -- one dime and three pennies. This number would be different in countries that use different denomination coins, such as the 2-cent piece.
To make 90 cents using the fewest number of coins, you can use one half-dollar coin (worth 50 cents) and two quarters (each worth 25 cents). This combination totals 90 cents. Alternatively, you could use nine dimes (each worth 10 cents) to make 90 cents. These are the two most efficient combinations to make 90 cents using coins.
6
There are 4 dimes
Four current American coins