Question 1022711
looks like you are subtracting 12-n each time from the term preceding it.
n is the term number.
so the first term has n = 1, the second term has n = 2, etc.



you are given that, when n = 1, the value of the term is 58.


this is your starting point.


when n = 2, the value of the term is 58 - (12-2) = 58 - 10 = 48.


when n = 3, the value of the term is 48 - (12-3) = 48 - 9 = 39.


when n = 4, the value of the term is 39 - (12-4) = 39 - 8 = 31.


when n = 5, the value of the term is 31 - (12-5) = 31 - 7 = 24.


when n = 6, the value of the term is 24 - (12-6) = 24 - 6 = 18.


if the missing term is the sixth term, then the value of the missing term is 18.