3 years ago

A sequence is n(n - 1)Which term is 156? The ___th Term

Mathematics

1 answer:

Bond [772]3 years ago

3 0

Answer:

n(n-1) =156

n^2-n=156

n^2-n-156=0

(n-13) (n+12) =0

so n=13 because it's an ordinary number and can't be negative

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