Question

What is the 108th term of the sequence 1,-1,0,1,-1,0,.... Is?

Answer 1

an=108
a=1
d= Second term-first term =(-1)-1 = -1-1 = -2.

an=a+(n-1)d
108=1+(n-1)-2
108=1+(-2n)+2
108=1-2n+2
108=3-2n
108-3=-2n
105/-2=n

Answer 2

Step-by-step explanation:

a=1

d= -1-1= -2

an=108

an= a+(n-1)d

108=1+(n-1) -2

108=1+2n-2

108=3-2n

108-3= 2n

105=2n

n=54.5