Question

if you take one from 19 is 20.how?​

Answer 1

Explanation:

In Roman No. We wrote 19 as XIX, Then we took 1 (i.e.I) from it and it become 20 (XX).

Answer 2

$☆here \: is \: ur \: answer☆\:$

When it is the Roman numeral XIX. You take away “I” leaving “XX” which is 20.

$hope \: it \: helps \: you.....$