0 votes 0 votes If $n^2= 12345678987654321$, what is n? 12344321 1235789 111111111 11111111 Quantitative Aptitude cat1999 quantitative-aptitude + – go_editor asked May 10, 2016 go_editor 13.8k points 891 views answer comment Share See all 0 reply Please log in or register to add a comment.
Best answer 1 votes 1 votes $11^{2} $ =121 $111^{2}$ =12321 $1111^{2}$ = 1234321 Similarly $(111111111)^{2}$ =12345678987654321. Hence,option (C)111111111 . . Leen Sharma answered May 10, 2016 selected May 14, 2016 by srestha Leen Sharma 11.5k points comment Share See all 0 reply Please log in or register to add a comment.