0
Calculate
13
−
2
13-2
13
−
2
Check
Solution Road
Correct answer:
11
Solution Road
Counting down from
13
13
13
by
2
2
2
takes you to
−
1
−
1
↶
↶
9
10
11
‾
12
13
‾
14
15
∣
∣
∣
∣
∣
∣
∣
\begin{array}{cccccccccccccc} &&&&&-1&&-1&&&&& \\ & &&&&\curvearrowleft &&\curvearrowleft&& &&&&\\ 9&&10&&\underline{11}&&12&&\underline{13}&&14&&15&& \\ |&&|&&|&&|&&|&&|&&| \\ \hline \end{array}
9
∣
10
∣
11
∣
−
1
↶
12
∣
−
1
↶
13
∣
14
∣
15
∣
So the answer is
11
11
11
.
Task text