Question

find the first negative term of the above AP​

Answer 1

Solution:

Given:

first term (a) = 16

second tem = 59/4

d = (59-64)/4 = -5/4

First Negative term:

0 = 16+(n-1)(-5/4)

or, (n-1)(-5 /4) = -16

or, n-1 = 64/5

or, n = 64 / 5 +1

or ,n = 15 (approx)

Answer 2

Answer:

Hope it's beneficial.