1 + 1.2 + 3.3 + 51 + 7.2 + 11.3 + 13 according to a certain rule, what is the 27th formula

1 + 1.2 + 3.3 + 51 + 7.2 + 11.3 + 13 according to a certain rule, what is the 27th formula

1-1 = 0, 7.2-1.2 = 6, 11.3-3.3 = 8, 13-5 = 8
The first number of each formula is 1, the second number is 6 larger than the second number, the third number is 8 larger than the third number, and the fourth number is 8 larger than the fourth number
The 27th formula should be 1 + (1.2 + 26 × 6) + (3.3 + 26 × 8) + (5 + 26 × 8) = 1 + 157.2 + 211.3 + 213
Hope to adopt

The integers smaller than - 1 are arranged as follows, tell their rules, and answer which column will - 100 be in
First column second column third column fourth column
-2 -3 -4 -5
-9 -8 -7 -6
-10 -11 -12 -13
-17 -16 -15 -14
....
But I'm in the fourth column

Through observation, we can see that there are four in a row, so - 100 is the 99th number, so it is in the 24th row. We also know that it represents the change direction with 8 as the unit, and we can see that the last behavior is - 98, - 99, - 100, so - 100 is in the third column

The number arranged according to a certain rule: 123246369. What is the 99th number in this column? What is the sum of the first 100 numbers

Three numbers are a group, 99 / 3 = 33
Group 33 was 336699
The 99th number is 99
The sum of 3 numbers in each group is 6 times of the first number
1+2+3+…… +33=33*（33+1）/2=561
561 * 6 = 3366, the 100th number is 34
3366+34=3400
The sum of the first 100 numbers is 3400