Known as 3, - 6,9, - 12, ··· - 2004, 2007, 2010, write the 100th number in this column, and give you a big reward for the sum of the number in this column Known as 3, - 6,9, - 12, ··· - 200420072010, Write the 100th number in this column It's the sum of this column It's a great reward. Don't forget to tell me

Known as 3, - 6,9, - 12, ··· - 2004, 2007, 2010, write the 100th number in this column, and give you a big reward for the sum of the number in this column Known as 3, - 6,9, - 12, ··· - 200420072010, Write the 100th number in this column It's the sum of this column It's a great reward. Don't forget to tell me

Recently, I'm reviewing the arithmetic and proportional series. I'm not good at math. I'll just do it with you. If you make a mistake, you should pay attention to it
What the student said just now is not very accurate. It's not that the odd number is positive and the even number is negative. If so, why 2010 is not negative. (of course, I don't know if you are wrong about the topic) in short, I exclude 2010 and regard 3 to 2007 as a sequence
Next, consider the integer as a fraction, for example, 3 as 6 / 2, 6 as 12 / (- 2), and so on, but the negative sign must be placed below. After this transformation, it is not difficult to see that the numerator is an arithmetic sequence with A1 as 6 and D as 6, and the denominator is an arithmetic sequence with A1 as 2 and Q as - 1. In this way, the 100th term of the numerator and the 100th term of the denominator can be obtained respectively with the formula
Let's talk about the sum of the numbers in this column. If we don't look at 2010, we can see that 3 + 2007 = 2010, - 6 + (- 2004) = - 2010 can cancel each other, so we can find the last number that can't be eliminated, that is, from 3 to 2007, it can't be added with another number equal to 2010, which can be calculated as 1005, and the odd number is positive, So the sum of this sequence is 1005 + 2010 = 3015
If you copy - 2010 into 2010, the result is 1005 + (- 2010) = - 1005

Known 3, - 6,9, - 12., - 2004, 2007, 2010 1. Write the 100th number in this column 2. Find the sum of a column of numbers, 2010 is correct

The odd term is positive, the even term is negative, the number is a multiple of 3, so the 100th term is - 300, and the sum of the sequence is
-3 times 336 plus 2007 plus 2010 = 3009

Given 3, - 6,9, - 12, ··· - 2004, 2007, 2010, complete the following questions: (1) write the 100th number in this column; (2) find this column
There is no wrong number for 2010

The (n + 1) power of sequence an = 3 * n * (- 1), the 101 power of A100 = 3 * 100 * (- 1) = - 300.2010 is wrong, it should be - 2010