the frst term of AP is 4 and the last term is 79.given that the sum of the AP is 996, find the number of terms and the commmon difference.
maths - Steve, Tuesday, April 23, 2013 at 2:44pm
Sn = n/2 (8+(n-1)d) = 996
An = 4+(n-1)d = 79
n = 24
d = 75/23