Question
How many 7s are there in the following series which are
not immediately followed by 3 but immediately preceded by 8? 898762263269732872778747794Solution
8 9 (8 7) 6 2 2 6 3 2 6 9 7 3 2 (8 7) 2 7 7 (8 7) 2 3 7 7 9 4 Answer is three (option B).
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