XIX ____ XX.
Since X = 10, we have XX = 10 + 10 = 20. When a Roman numeral with the larger value is on right, we subtract the values. ∴ IX = 10 - 1 = 9. ⇒XIX = 10 + 9 = 19 Since 19 is less than 20, we have XIX to be less than XX.
XXI ___ 29.
A die is thrown once. Find the probability of getting a number:
i) less than 3
ii) greater than or equal to 4
iii) less than 8
iv) greater than 6