LPU will do admissions based on it's own entrance exam known as LPUNEST .for B.Hons also LPUNEST is very mandatory.if you score very good score,then you'll may get a scholarship or fee concession.so,you have to give LPUNEST entrance.

I would suggest LPU for pursuing Bsc maths (hons) course.

As per the, Eligibility Criteria (Qualifying Exam) Pass with 60% aggregate marks in 10+2 (with English, Physics, Chemistry and Maths) or equivalent, subject to qualifying LPUNEST. (https://nest.lpu.in/ug-sciences/)
For a candidate, who has not studied English as a subject, the condition of English may be waived off provided the candidate in his qualifying exam has studied in English medium.

(5% relaxation to North-East states and Sikkim candidates or Defence Personnel and their Dependents or Wards of Kashmiri Migrants)