Question

Which of these terms of the sequence given is the first negative term?

• A.
• B.
• C.
• D.

Answer 1

The correct option is C

First term = 15, common difference = $\left(\frac{-5}{4}\right)$
$15-(n-1)\times \left(\frac{5}{4}\right)=0$
i.e., n = 13
therefore, first negative term occurs at n =14