0 votes 0 votes 9 8 21 100 693 ? (a) 6200 (b) 6330 (c) 6228 (d) 6230 (e) 6100 Quantitative Aptitude sequences&series + – go_editor asked Jan 31, 2017 go_editor 13.9k points 508 views answer comment Share See all 0 reply Please log in or register to add a comment.
Best answer 1 votes 1 votes $\\ 9\times 1 -1 =8 \\ 8 \times 3-3 = 21 \\21 \times 5-5=100 \\100\times 7-7=693 \\693 \times 9-9= 6228$ Hence,Option$(C)6228.$ Leen Sharma answered Mar 1, 2017 • selected Mar 4, 2017 by Arjun Leen Sharma 11.5k points comment Share See all 0 reply Please log in or register to add a comment.