The ridges on the edges of coins are called "reeding". When coins were made of precious metals like silver and gold, reeds were used to prevent theft by shaving, i.e. using a sharp instrument to remove a tiny bit of metal from the edges of a coin. A shaved coin would very slightly smaller but not enough to be noticed. If a crook shaved enough coins they could make a nice profit selling the scraps. Mints adopted reeded edges so any attempt at shaving would be immediately obvious.
Nickels and cents have smooth edges because those denominations were never made of precious metals. When the US switched from silver coinage to copper-nickel clad coins in the 1960s reeded edges were no longer necessary but the Mint decided to continue using them so the new coins were as much like the old ones as possible. However new designs and denominations like the current Presidential dollars don't have to match any previous coins so they're made without reeding.
Other countries now use specialized reeding to make it easier for visually-limited people to tell coins apart by touch. For example some denominations of euro coins are similar in size but have very different edges with, for example, wide reeds, narrow reeds, or "interrupted" reeds consisting of alternating ridged and smooth sections.
pennies - 100 nickels - 20 dimes - 10 quarters - 4
8 nickels 14 pennies 5 dimes and 6 quarters equals $2.54
There are 2 solutions (if you include the non-use of quarters): 1 Quarter, 2 Dimes, 2 Nickels, 45 Pennies No Quarters, 2 Dimes, 8 Nickels, 40 Pennies
None. If you "get 65 cents using only dimes nickels and quarters" you are not using any pennies!
4 quarters = $1.00 4 dimes = $0.40 4 nickels = $0.20 4 pennies = $0.04 Total: $1.64
pennies - 100 nickels - 20 dimes - 10 quarters - 4
10 quarters 7 dimes 9 pennies and 27 nickels is: $4.64
8 nickels 14 pennies 5 dimes and 6 quarters equals $2.54
2 quarters 3 dimes 8 nickels and 7 pennies equal $1.27
There are 2 solutions (if you include the non-use of quarters): 1 Quarter, 2 Dimes, 2 Nickels, 45 Pennies No Quarters, 2 Dimes, 8 Nickels, 40 Pennies
None. If you "get 65 cents using only dimes nickels and quarters" you are not using any pennies!
1.78 pennies 2.7 dimes 8 pennies 3.15 nickels 3 pennies 4.14 nickels 8 pennies 5.3 quarters 3 pennies 6.7 dimes 1 nickel 3 pennies 7.6 dimes 3 nickels 3 pennies 8.2 quarters 2 dimes 1 nickel 3 pennies 9.2 quarters 2 dimes 8 pennies 10.1 quarter 5 nickels 2 dimes 8 pennies 11. 1 half-dollar 2 dimes 1 nickel 8 pennies 12.1 half-dollar 2 dimes 2 nickels 3 pennies 13.7 dimes 1 nickel 3 pennies 14.2 dimes 2 nickels 1 quarter 4 nickels 3 pennies 15.1 half-dollar 5 nickels 3 pennies
4 quarters = $1.00 4 dimes = $0.40 4 nickels = $0.20 4 pennies = $0.04 Total: $1.64
4 quarters or 3 quarters 2 dimes and 1 nickel or 2 quarters and 5 dimes or 2 quarters 4 dimes and 2 nickels or 3 quarters and 25 pennies or 3 quarters 2 dimes and 10 pennies or 100 pennies or The list can do on and on. Any combination of pennies, nickels, dimes, and quarters that equal to a dollar. If you are speaking of the dollar.
It would all depend on the mix. If you had 180 pounds of pennies and the other 10 pounds were nickels, dimes and quarters that would be worth a lot LESS THAN if you had 180 pounds of quarters and the other 10 pounds were pennies, nickels and dimes.
pennies 26.66% nickels 33.33% dimes 23.33% quarters 16.66%
14 quarters plus 15 dimes plus 12 nickels and 5 pennies is a total amount of $5.65