Khan/khan-exercises — Issue #4214: Counting 2 - The math seems incorrect
Author: KhanBugz
Created: 2011-10-12 16:05:54+00:00
State: open
Labels: firefox, win7

Reporter: fantasycomedian@gmail.com

Omar starts counting at 41, and he counts by threes.

What is the 12th number that Omar counts?

KHAN ACADEMY ANSWER: 74

KHAN ACADEMY PROBLEM

What is the 12th number that he counts?

41+(11×3)=41+33=74

Error: The problem says to the 12th number. Not the eleventh (11).
~~~

12 X 3 = 36 + 41 = 77

41
+3 (1 three)
44
+3 (2 three)
47
+3 (3 three)
50
+3 (4 three)
53
+3 (5 three)
56
+3 (6 three)
59
+3 (7 three)
62
+3 (8 three)
65
+3 (9 three)
68
+3 (10 three)
71
+3 (11 three)
74
+3 (12 three)

77

[counting_2.html?seed=125&problem=every-n](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/counting_2.html?seed=125&problem=every-n)

["77","53","77"]

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