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MATH / Consider the sequence of numbers: 4,7,1,8,9,7,6,… For n>2, the n-th term of the sequence is the units digit of the sum of the two previous terms. Let S_(n) denote the sum of the fi…

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problem

Consider the sequence of numbers: 4,7,1,8,9,7,6,…4,7,1,8,9,7,6,\dots For n>2n>2, the nn-th term of the sequence is the units digit of the sum of the two previous terms. Let SnS_n denote the sum of the first nn terms of this sequence. Find the smallest value of nn for which Sn>10,000.S_n>10,000.
Plain-text mathematical notation (without MathML)
Consider the sequence of numbers: 4,7,1,8,9,7,6,… For n>2, the n-th term of the sequence is the units digit of the sum of the two previous terms. Let S_(n) denote the sum of the first n terms of this sequence. Find the smallest value of n for which S_(n)>10,000.
Original LaTeX notation
Consider the sequence of numbers: $4,7,1,8,9,7,6,\dots$ For $n>2$, the $n$-th term of the sequence is the units digit of the sum of the two previous terms. Let $S_n$ denote the sum of the first $n$ terms of this sequence. Find the smallest value of $n$ for which $S_n>10,000.$

level

Level 3

type

Intermediate Algebra

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