What Arabic numeral does the Roman numeral LXIV convert to?

To convert the Roman numeral LXIV to an Arabic numeral, we break down the components of the Roman numeral:

• The letter L represents 50.

• The letter X represents 10, and since there are two X's, we add 10 + 10, which gives us 20.

• The letter I represents 1, and since there is one I, we add 1.

Now we add these values together:

50 (from L) + 10 (from the first X) + 10 (from the second X) + 1 (from I) = 50 + 20 + 1 = 71.

However, it is important to note that since we are misassessing the components leading us to this point of 71, another check reveals the conversion should actually read LXIV where "IV" denotes that we have a value of 4 (since V is 5 and I is 1). This changes our addition as follows:

50 (from L) + 10 (from X) + 4 (from IV) = 50 + 10 + 4 = 64.

Therefore, the correct Arabic numeral corresponding to the Roman numeral LXIV is 64.