A row of seats in a stadium has 100 seats. If 12 people sit in a row so that there are 2 empty seats between any person and the next person, how many empty seats in the rpw are not between the two end people?

To find the number of empty seats in the row that are not between the two end people, we need to calculate the total number of empty seats first.

First, let's identify the number of occupied seats in the row. It is given that 12 people are sitting in the row with 2 empty seats between each person. Therefore, each grouping of 2 people and 2 empty seats can be considered as a single unit, so there are 12/2 = 6 of these units.

In each unit, there are 2 people and 2 empty seats, so a unit consists of 2 + 2 = 4 spaces.

To determine the number of occupied seats, we can multiply the number of units by the number of filled spaces within each unit: 6 units x 2 filled spaces = 12 occupied seats.

Now, let's calculate the number of empty seats. The total number of seats in the row is given as 100. Since there are 12 occupied seats, the number of empty seats is 100 - 12 = 88.

Finally, we need to subtract the two end seats from the count of empty seats, as they are not between any two people. Since there are two end seats on the row, we subtract 2 from the count of empty seats: 88 - 2 = 86.

Therefore, there are 86 empty seats in the row that are not between the two end people.

If there are four seats per row, one person sits at each end, and two spaces will be between them. The same goes for 7 seats, namely the first, fourth, and seventh will be occupied. Continuing this way, we know that seats will be occupied on the

1st, 7th, 10th, 13th, .... (3n+1)th.
So which is the occupied seat below or equal to the 100th seat?