Question
147Â Â 490Â Â 707Â Â Â 831Â Â Â Â 895Â Â
 930  In each of the following questions one number is wrong. Find the wrong number.Solution
The series is +7³, +6³, +5³, +4³, +3³, +2³, ..... The series is 147 + 343 = 490, 490 + 216 = 706 706 + 125 = 831 831 + 64 = 895 895 + 27 = 922 922 + 8 = 930 Therefore it should be 706 in place of 707.
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