well, look at the evens: -2, +4, -6, +8 ...
how many evens in the 1st 16 terms?
take 1/2 of that number
{-1, -2, -3, 4, -5, -6, -7, 8, …}
How many positive even digits are in the first 16 terms of the pattern?
1 answer
How many positive even digits are in the first 16 terms of the pattern?
1 answer