0 votes 0 votes If $^nP_6=332640$ How to quickly and efficiently find out the value of n. I know that fact that product of m consecutive integers is divisible by m!. How can we find the value of n quickly? Quantitative Aptitude combinatory + – Ayush Upadhyaya asked Oct 27, 2018 Ayush Upadhyaya 437 views answer comment Share Follow See all 5 Comments See all 5 5 Comments reply Balaji Jegan commented Oct 27, 2018 reply Follow Share Hope this helps u. 3 votes 3 votes srestha commented Oct 27, 2018 reply Follow Share yes, no shortcut 0 votes 0 votes Ayush Upadhyaya commented Oct 27, 2018 reply Follow Share I already tried this method. Thanks balaji.:) 1 votes 1 votes Balaji Jegan commented Oct 27, 2018 reply Follow Share Another method is to solve this polynomial equation of degree 6 n(n-1)(n-2)(n-3)(n-4)(n-5) - 332640 = 0 0 votes 0 votes Ayush Upadhyaya commented Oct 30, 2018 reply Follow Share @Balaji-In GATE exam, that is not suitable. 0 votes 0 votes Please log in or register to add a comment.