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Refer to the given number, 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 an odd number and immediately followed by an even number?
Two
Four
Three
One
Three
Scan the sequence for symbols first, then check the immediate left (odd number) and immediate right (even number).
Scan the sequence for symbols first, then check the immediate left (odd number) and immediate right (even number).
Identify pattern criteria
We are looking for the triplet pattern: [Odd Number] тЖТ [Symbol] тЖТ [Even Number].
Analyze the series
Scanning from left: 7(O) & (S)тВД(E) is a match. 9(O) # (S)тВЖ(E) is a match. 5(O) = (S)тВВ(E) is a match.
Verify non-matching symbols
Other symbols: '&' (no odd left), '%' (4 is even), '@' (6 is even), 'тДж' (8 is even), '*' (6 is even, ┬г is not an even number).
A: Two is incorrect as 3 matches exist. B: Four is incorrect as only 3 patterns satisfy the condition. D: One is incorrect as it underestimates the series count.
C is correct because there are exactly three instances (7 & 4, 9 # 6, 5 = 2) where a symbol is preceded by an odd number and followed by an even number.
Always mark odd/even numbers immediately when solving series questions to avoid errors in high-pressure exam environments.
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