If k is the index of the term of the series whose value is n, then we have

n = 3k - 1

suggesting that

_____

(3n-1) does not give the value of n. It gives the value of the n

For n=1, the 1st series term is 3*1-1 = 3-1 = 2

For n=2, the 2nd series term is 3*2-1 = 6-1 = 5

For n=3, the 3rd series term is 3*3-1 = 9 -1 = 8

...

(It appears that several of the questions on this quiz are

n+3 (answer D) will give the

n = 3k - 1

suggesting that

**C**is the answer of choice._____

(3n-1) does not give the value of n. It gives the value of the n

^{th}term of the series.For n=1, the 1st series term is 3*1-1 = 3-1 = 2

For n=2, the 2nd series term is 3*2-1 = 6-1 = 5

For n=3, the 3rd series term is 3*3-1 = 9 -1 = 8

...

(It appears that several of the questions on this quiz are

*badly worded*. This is one of them.)n+3 (answer D) will give the

*value of the next term*.