0 votes 0 votes Q. Two consecutive numbers are removed from the progression 1, 2, 3, ...n. The arithmetic mean of the remaining numbers is 26 1/4. The value of n is a. 60 b. 81 c. 50 d. Cannot be determined Quantitative Aptitude discrete-mathematics + – Raj Kumar 7 asked Jul 13, 2018 Raj Kumar 7 857 views answer comment Share Follow See all 8 Comments See all 8 8 Comments reply Show 5 previous comments gauravkc commented Jul 15, 2018 reply Follow Share Not the best way but I formed an equation and tried the options. 26.25 = (sum of 1st n natural numbers - x - x-1) / (n-2) where the sum of 1st n natural numbers is n(n+1) / 2 x and x+1 are the two consecutive numbers subtracted from it. n-2 because 2 numbers are removed from n. 0 votes 0 votes Raj Kumar 7 commented Jul 15, 2018 reply Follow Share @gaurav After form equation then you randomly check using value of (n , x). 0 votes 0 votes gauravkc commented Jul 15, 2018 reply Follow Share No. I tried the 3 options in place of n and tried to calculate x 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes Answer should be 50. imnitish answered Jul 20, 2018 imnitish comment Share Follow See 1 comment See all 1 1 comment reply gauravkc commented Jul 21, 2018 reply Follow Share If you are answering, at least include the solution in it. It is already known that the answer is 50. 0 votes 0 votes Please log in or register to add a comment.
