Question

The first term of a sequence is 2 and each successive number is obtained by subtracting 1 from the preceding number and then squaring the result. What is the seventh number in the sequence?

Answer 1

Let's write down the terms. :D
\[a_1=2\\
a_2=(a_1-1)^2=1^2=1\\
a_3=(a_2-1)^2=0^2=0\\
a_4=(a_3-1)^2=(-1)^2=1\]
And a_5 is 0, a_6 is 1, a_7 is....?

Answer 2

2....??

Answer 3

There's a pattern: If you get a 0, the next term is a 1 and if you get a 1, the next term is a 0. Which means that the sequence repeats 0 and 1 ad infinitum.
Since a_6 is a 1, a_7 is a ....?

Answer 4

I don't understand T_T

Answer 5

2? If it's not two, then I don't know

Answer 6

It's a 0. :D

Answer 7

I HATE SATTTTTTTTTTTTTTT.

Answer 8

Thank you.

Answer 9

Yeah, the questions can be so stupid yet simple. :))