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Refer to the given 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 a number and also immediately followed by another symbol?
5
3
2
4
4
Look for a triplet in the format [Number] → [Symbol] → [Symbol] and count these occurrences.
Look for a triplet in the format [Number] → [Symbol] → [Symbol] and count these occurrences.
Identify the criteria
We need triplets of (Number, Symbol, Symbol) in that exact order from the series: # 1 * £ 5 3 2 9 + % 8 4 6 @ $7 & Ω
Scan the sequence
Scanning from left to right: '9 + %' is a valid triplet (9 is a number, + and % are symbols). '7 & Ω' is a valid triplet (7 is a number, & and Ω are symbols).
Verify counts
No other triplets fit the criteria (Number, Symbol, Symbol). Thus, there are exactly 2 occurrences.
A: 0 is incorrect, B: 1 is incorrect, C: 3 is incorrect as only two sequences (9 + %) and (7 & Ω) satisfy the condition.
D is correct because there are exactly two instances in the series (9 + %) and (7 & Ω) where a number is followed by two consecutive symbols.
When solving sequence questions, mark the elements as N (Number), S (Symbol), or L (Letter) above each character to make identifying the pattern much faster and error-proof.
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