Question

which term of the AP 115 110 105,.............. is its first negative term

Answer 1

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Question:-which term of the AP 115 110 105,.............. is its first negative term

Solution :- In attachment file

Answer 2

Given ; AP 115 110 105

To Find ; First negative term

Solution ; AP is 115 110 105

here first term of ap is a1= 115

second term of ap is a2 = 110

Common difference = a2 - a1 = 110 -115 = - 5

For first negative term an = 0

an = 0

a +  (n - 1 ) d = 0

115 + (n-1) *-5 =0

n-1 = 115/5

n= 24

Hence the first negative term is 24