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wat is the formula for this sequence???

90, 81, 72, 63, 54,

i need the formula... an+x

2007-09-16 02:50:31 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

1 answers

They are multiples of 9, running backwards

9*(11-n)

2007-09-16 02:53:37 · answer #1 · answered by Raymond 7 · 1⤊ 0⤋

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