Discussion
How many even numbers are there in the following sequence of numbers which are immediately followed by an odd number as well as immediately preceded by an even number?
8 5 8 6 7 6 8 9 3 2 7 5 3 4 2 2 3 5 5 2 2 8 1 1 9 3 1 7 5 1
Answer: C
Correct answer: 4
Running through the row and keeping only those even numbers that have an even number immediately before them and an odd number immediately after them, four qualify; the rest fail on one side or the other.
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