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Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only.
How many such numbers are there, each of which is immediately preceded by a symbol and also immediately followed by a symbol?
Two
One
Zero
Four
Four
Identify numbers matching the condition: [Symbol] [Number] [Symbol]
Examine Every Number in the Series
• '1': Preceded by boundary, not a symbol.
• '7': Preceded by • '1': Preceded by boundary, not a symbol. • **'7'**: Preceded by and followed by & ⟹ **7 &** (1st match)
• '3': Preceded by `&`, but followed by number '4'.
• '4': Preceded by number '3'.
• '6': Preceded by number '4'.
• **'8'**: Preceded by `@` and followed by `Ω`\implies∗∗@8Ω∗∗(2ndmatch)•∗∗′9′∗∗:Precededby‘\implies**% 9 #** (3rd match)
• **'2'**: Preceded by `£` and followed by `&`\implies$ £ 2 & (4th match)
• '5': Preceded by &, but followed by boundary.
Total Count
The matching patterns are:
Exactly four numbers satisfy the condition.
Four
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