Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Olympiad workbookIOQMPermutation and Combination

Let n=2 ¹⁹ 3¹² . Let M denote the number of positive divisors of n^2 which are less than n but would not divide n . What is the number formed by taking the last two digits of M (in the same order)?

Correct answer

28

Step-by-step solution

n^2=2³⁸ 3²⁴ Required number of divisors aligned & = (38+1)(24+1)+1 2 -20 13 & =228 & 28 aligned

Practice Permutation and Combination on Quantrex Academy →

More from Permutation and Combination

All Permutation and Combination questions Full Permutation and Combination list All Olympiad workbook PYQs