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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 symbols are there, each of which is immediately preceded by another symbol and also immediately followed by a number?
1
4
2
3
3
Scan the sequence for symbols first, then check the immediate left for another symbol and the immediate right for a number.
Scan the sequence for symbols first, then check the immediate left for another symbol and the immediate right for a number.
Analyze the series
The given series is: 2 9 + % 8 4 5 3 @ $7 & Omega 6 # 1 * Pound. We are looking for the pattern: Symbol - Symbol - Number.
Identify valid triplets
Check each symbol position: 1) '+' is preceded by 9 (no). 2) '%' is preceded by '+' (both are symbols), but followed by 8 (a number). This forms the triplet (+, %, 8). 3) '@' is preceded by 3 (no). 4) ', 7). 5) '&' is preceded by 7 (no). 6) 'Omega' is preceded by '&' (both symbols), but followed by 6 (a number). This forms the triplet (&, Omega, 6). 7) '#' is preceded by 6 (no). 8) '' is preceded by 1 (no). 9) 'Pound' is preceded by '' (both symbols), but there is no number following it. is preceded by '@' (both are symbols), but followed by 7 (a number). This forms the triplet (@, $, 7). 5) '&' is preceded by 7 (no). 6) 'Omega' is preceded by '&' (both symbols), but followed by 6 (a number). This forms the triplet (&, Omega, 6). 7) '#' is preceded by 6 (no). 8) '' is preceded by 1 (no). 9) 'Pound' is preceded by '' (both symbols), but there is no number following it.
Count the instances
The valid triplets found are: (+, %, 8), (@, $, 7), and (&, Omega, 6). There are exactly 3 such instances.
A: Represents 1, which is incorrect as we found 3 triplets. B: Represents 2, which is incorrect as we found 3 triplets. C: Represents 4, which is incorrect as we found 3 triplets.
D is correct because there are exactly 3 symbols (%, $, Omega) that are preceded by a symbol (+, @, &) and followed by a number (8, 7, 6) respectively.
When counting specific patterns in long series, always use your pencil to group the items into triplets immediately upon identifying a match to avoid double-counting or missing elements.
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