The answer is a nickel and a 50 cent piece (half dollar). The question states that *one* of them is not a nickel, but the other coin may be a nickel. In fact, this is the only answer.
One is a half dollar and the other is the nickel. This way, one is not the nickel, the other is the nickel.
A quarter and a nickel. The quarter is not a nickel.
A quarter and a nickel. (One isn't a nickel, but the other one is!)
A half dollar (which is not a nickel) and a nickel.
The 2 coins are a nickel and a quarter with the quarter being the coin that IS NOT a nickel.
The one that is not a nickel is a 50 cent piece. The other is a nickel.
A half dollar and a nickel. One of them isn't a nickel, the other one is.
A half dollar and a nickel. One of them isn't a nickel, the other one is.
That would be a half-dollar and a nickel. One is not a nickel, the other one is.
One is a half dollar and the other is a nickel. You have two coins, ONE is not a nickel, but the other one is!
A half dollar and a nickel. One of them isn't a nickel, the other one is.
1 half dollar and a nickel
25 cents plus 5 cents = 30 cents. One of these coins is not a nickel.