Question

which term of the AP : 29, 125, 121, 117 Is the first negative term

Answer 1

Given,

a = 29
d = 125 - 29
= 96

A/Q

$t_{n}$ = -1

=> a + (n - 1) d = -1

=> 29 + (n - 1 ) 96 = -1

=> (n-1) = $\frac{ - 1 - 29}{96}$

=> n - 1 = $\frac{ - 5}{16}$

=> n = $\frac{ - 5 + 16}{16}$

=> n = $\frac{11}{16}$

hope it helps u

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Answer 2

so 34th term is the first negative of this AP