Find how many term has and ap whose the common difference is -6 and first term is 8 and the last term is -82.
i dont understand
To find the number of terms in an arithmetic progression (AP), you can use the formula:
n = (last term - first term) / common difference + 1
Given that the common difference (d) is -6, the first term (a) is 8, and the last term (l) is -82, we can substitute these values into the formula to find the number of terms (n):
n = (-82 - 8) / -6 + 1
n = (-90) / -6 + 1
n = 15 + 1
n = 16
So the arithmetic progression has 16 terms.
a = 8
d = -6
8 + (n-1)*6 = -82
Now just find n