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Refer to the following number, symbol series and answer the question. Counting to be done from left to right only.
How many such symbols are there each of which is immediately preceded by a number and also immediately followed by a number?
5
6
3
4
4
Scan for symbol-number-symbol clusters and look specifically for the pattern (Number, Symbol, Number). Ignore symbols that are preceded or followed by other symbols.
Scan for symbol-number-symbol clusters and look specifically for the pattern (Number, Symbol, Number). Ignore symbols that are preceded or followed by other symbols.
Analyze the condition
We need to find symbols that are immediately preceded by a number AND immediately followed by a number (Number тЖТ Symbol тЖТ Number).
Execute the scan
Traverse the sequence: '3 8 9 5 ┬г 6' (5-┬г-6 matches), '3 @ 3' (3-@-3 matches), '3% @' (no), '7 * 1' (no), '1 # 2' (1-#-2 matches), '6 9 2 7 & ┬г' (no symbols meet the criteria).
Final tally
The identified instances are: (5, ┬г, 6), (3, @, 3), and (1, #, 2). Total count = 3.
A: 5 is incorrect because there are only 3 instances found. B: 6 is incorrect as it overestimates the valid patterns. D: 4 is incorrect because the sequence only contains 3 qualifying triplets.
C is correct because there are exactly three instances of a symbol being flanked by numbers: 5-┬г-6, 3-@-3, and 1-#-2.
In alphanumeric series questions, always physically mark the triplets on your rough sheet to avoid missing elements or double-counting overlapping sequences.
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