3 dimes, and a quarter.
Commutative property of multiplication.
3 dollar coins, 4 dimes, 3 nickels, 4 pennies.
You are in Australia - maybe - and have 4 coins of 50 cents each.
8- 5cent coins 4- 10cent coins 1 -20cent coin
Arrange them in the shape of a square with 4 on the left, 4 on the right, 4 across the top, and 4 across the bottom. The coin in each corner counts as a member of two edges. Each edge has 4 coins in it, and there are a total of 12 coins all around the square.
Two coins at each vertex.
4*9 = 36 coins.
3 nickels and a penny
This is only possible if you allow adding coinsNumber of coins in row x Number of rows = total number of coins5 x 2 = 10 coins4 x 4 = 20 coinsYou would need 10 more coins