0:08

Then turning our attention to the fifth and
final question of the first game, "Which of

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the following must be true about any acceptable
product code . . . " We're looking again for

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(A), There is exactly 1 digit between the
0 and the 1. Again, looking at our free

0:25

hypothetical that we just drew up from Question
4, you notice that there are no digits between

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the 0 and the 1, so (A) does not have to be
true, and (A) would be eliminated.

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(B), There is exactly one digit between
the 1 and the 2. Again, that does not have

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to be true, looking at our scenario 1, and
our hypothetical scenario 1 from Question

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3, we notice that there is no space between
1 and 2. No digits, they are directly next

0:57

to each other, so (B) does not follow, and
(B) would be eliminated.

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(C), There are at most two digits between
the 1 and the 3. Again, you notice from

1:11

scenario 1, we could actually have three digits
in between the 1 and the 3. Have 1 be first,

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3 be fifth, and there would be one, two, three
digits in between, so (C) does not have to

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be true, and (C) would be eliminated.

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Moving to (D), There are at most, two digits
between the 2 and the 3. Again, looking

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at scenario 2, we see we could have three
digits between the 2 and the 3. 2 could be

1:44

first, 3 could be fifth. Again, (D) does not
have to be true, so (D) is out.

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Which brings this process of elimination to
(E), ?There are at most two digits between

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the 2 and the 4. If you notice in scenario
1 where 2 is second, the latest we could have

2:02

4 is fifth, and that is exactly two spaces
in between. At most, two, in that scenario.

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Whereas in scenario 1, there is no space between
2 and 4. You notice there is at most two digits

2:19

between 2 and 4. So (E) must be true, and
(E) would be the correct answer.

2:25

Alright, I hope that was helpful. Let's turn
our attention to Game 2.