What are Hindu-Arabic and Roman numerals?

Roman numeral, any of the symbols used in a system of numerical notation based on the ancient Roman system. The symbols are I, V, X, L, C, D, and M, standing respectively for 1, 5, 10, 50, 100, 500, and 1,000 in the Hindu-Arabic numeral system.

What is the Hindu-Arabic number of XL?

forty

What is XL in Arabic numerals?

Significant numbers from one to a thousand

Roman numerals		Arabic numerals
upper-case	lower-case	Arabic numerals
XXIII	xxiii	23
XXX	xxx	30
XL	xl	40

Why is 40 XL in Roman numerals?

Roman numerals don’t use four identical letters in a row. For example: You’d never exceed XXX, or for the tens placement. Since we can’t use four identical numerals in a row, 40 would not be XXXX but, rather, XL. Any time you see a line, that indicates the number should be multiplied by a thousand.

What is C Roman numeral?

How ancient Romans used to write numbers. I means 1, V means 5, X means 10, L means 50, C means 100, D means 500 and M means 1000. Example: 2015 = MMXV.

Who is the father of 0?

Brahmagupta

Which countries give the most homework?

Countries Who Spend the Most Time Doing Homework

Rank	Country	Average Homework Time, Per Week
1	China	13.8
2	Russia	9.7
3	Singapore	9.4
4	Kazakhstan	8.8

Which country students study most?

International students are always on the lookout for the best countries to study abroad. Thankfully, our world is full of a fantastic array of destinations….In this guide:

Rank	Country	International student population
1	USA	1,095,299
2	UK	496,570
3	China	492,185
4	Canada	435,415

Which country has most school days?

Chile

What country has the longest summer break?

In the northern hemisphere, the longest break in the educational calendar is in the middle of the year, during the northern summer, and lasts up to 14 weeks. In Ireland, Italy, Lithuania and Russia, summer holidays are normally three months, compared to six to eight weeks in Britain, the Netherlands and Germany.

Which country has the least bank holidays?

England