Given this sequence: 9,99,999 (etc)
Find the nth term :/
It looks so simple yet I just can't think of how to solve this.
Pointers/advice please?
Pretty sure it's not going to be quadratic or anything along those lines...
Where are you stuck? For n = 1, you have 9; for n = 2, you have 99, for n = 3, you have 999.
Why would the n-th term be a quadratic polynomial, instead of n 9's in a row? Or are you saying that you are supposed to find a formula for the n-th term?