20th 30th
30 = 30th
The ordinal number corresponding to the cardinal number thirty is thirtieth.
20 and 30
30 + 4 4 + 30 20 + 14 14 +20 12 + 22
23 or 29
x > 20
30 = thirty.
It is: thirty = 30
Let the unknown number be n.Then 20 + n = 30 : Subtract 20 from both sides gives :-20 - 20 + n = 30 - 20 : n = 10
It is: (20+30)/2 = 25
Thirty.
To write 20 in Roman numerals, you would use XX. To write 30, you would use XXX. Therefore, to write 20-30 in Roman numerals, you would write XX-XXX.