How many 7’s are in the following series which are not immediately followed by 3 but immediately preceded by 8? The given series is: 898762263269732872778737737794
- 2
- 3
- 10
- 0
Explanation
The question asks to find how many 7's are there that:
- Are not immediately followed by 3.
- Are immediately preceded by 8.
To solve this:
- We need to check each occurrence of 7 and see if it's preceded by 8 and not followed by 3.
Upon checking the series, the relevant occurrences of 7 are:
- 877 (preceded by 8, but not followed by 3)
- 877 (again preceded by 8, not followed by 3)
So, there are 2 such 7's.
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