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jmc

counting and probability intermediate

Problem

How many numbers are in the list
Solution
We first count the even terms of the sequence. Subtract from the list to get and then divide by to get So this list has numbers.

We then count the odd terms of the sequence. Subtract from the list to get then divide by to get So this list has numbers.

Now we sum up the above two numbers, which yield a total numbers.
Final answer
47