A bank assigns a 6-digit password using the following criteria. A password must contain 4 numbers and 2 letters. (not necessarily in that order.) A password cannot contain two of the same letters. How many passwords are possible

Eiko is wearing a magic ring that increases the power of her healing spell by 30%. without the ring, her healing spell restores h health points. which of the following expressions could represent how many health points the spell restores when eiko is wearing the magic ring?