Find the smallest positive integer n such that tn of the arithmetic sequence 20,19¼ ,18½ ,… is negative
Choose the correct choice from the following answers
A) 27  B) 28  C) 29  D) 30  E) 31
Here we have , a= 20 = d = 19 ¼-20=-3/4   We	want	to	find	the	first	positive	integer	n such thattn&lt;0   20+(n-1)(-3/4)&lt;0   n&gt;27.33   hence, 28th term is first negative term   Option 28
<result>B</result>
Find the smallest positive integer n such that tn of the arithmetic sequence 20,19¼ ,18½ ,… is negative