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January 6, 2014 9:00 AM
Posted by catcracker
Categories: All, Mathematics
Tags: Maths, Sequences
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Hi J, In first question, why did you eliminate option ending in 8?
By dev on October 18, 2021 at 6:47 PM
Because we need n(n+1)(2n+4) ending in 2, which doesn’t happen if n ends in 8
regards J
By catcracker on October 18, 2021 at 6:56 PM
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Hi J,
In first question, why did you eliminate option ending in 8?
By dev on October 18, 2021 at 6:47 PM
Because we need n(n+1)(2n+4) ending in 2, which doesn’t happen if n ends in 8
regards
J
By catcracker on October 18, 2021 at 6:56 PM