Each term in a sequence of numbers , except for the 1st term, is 2 less than the square root of the previous term. If the 3rd term of this sequence is 1, what is the 1st term?
(A)1
(B)9
(C) 11
(D) 121
(E) 123

Question

Each term in a sequence of numbers , except for the 1st term, is 2 less than the square root of the previous term. If the 3rd term of this sequence is 1, what is the 1st term?
(A)1
(B)9
(C) 11
(D) 121
(E) 123

tkhunny · Answer

Name the 1st Term.  We don't know the 1st term.  The problem statement demands the 1st term.  Let's give it a name so we can talk about it.

anonymous · Answer

2,6,14,30,......

anonymous · Answer

@tkhunny

tkhunny · Answer

That makes no sense.  You're just making up numbers.  You need to know the FIRST number.

How about N = The First Number in this sequence.

Okay, then the second term is: $\sqrt{N} - 2$

Can you describe the third term?