Which of the following statement is incorrect regarding the provisions of the official language in the Indian Constitution?
1
Part XVII of the Constitution deals with the official language.
2
Articles 343 to 351 deals with the official language.
3
Hindi written in Devanagari script is to be the official language of the union.
4
The form of numerals to be used for the official purposes of the union has to be the Devanagari form of numerals.