Test: Roman Numerals- 2 - Class 5 MCQ

To convert the Roman numeral XXIII to its Arabic equivalent, break it down as follows:

• X represents 10.
• Another X adds another 10, totaling 20.
• III at the end stands for 3.

Adding these together:

• 20 (from XX) + 3 (from III) = 23.

Therefore, XXIII in Arabic is 23.

X = 10.

Therefore, XX = 20. Hence, (a) is the right option.

The series follows a sequence of Roman numerals: X, XI, XII, XIII. Each numeral increases by one.
X is 10
XI is 11
XII is 12
XIII is 13
Continuing this pattern, the next number is 14, which is represented in Roman numerals as XIV.

The series uses Roman numerals: XX, XXV, _____, XXXV, XL.
Each number in the series increases by five.
Starting with XX (20), adding five gives XXV (25).
Continuing, 25 plus five equals XXX (30).
Thus, the missing number is XXX.

The series follows a +2 pattern. Hence, XVIII should be the next number in the series. So, (a) is the right option.

The Roman numerals correspond to the numbers:

• XIX for 19
• XXI for 21
• XXIV for 24
• XXV for 25

Among these, the classifications are as follows:

• 19, 21, and 25 are odd numbers.
• 24 is an even number.

Therefore, XXIV (24) is the odd one out because it is the only even number in the set.

The Roman numeral XV represents the number 15.
To find the missing digit, subtract from 15 to get X, which is 10.
Thus, the calculation is 15 - 5 = 10.
The missing digit is V.

X represents the number 10 in Roman numerals.
XX represents 20 in Roman numerals.
Adding these together: 10 + 20 = 30.
In Roman numerals, 30 is written as XXX.

The number 25 is represented as XXV. X stands for 10 and V stands for 5. So, XXV will make 25. Hence, (b) is the right option.