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Examoogle • User • info@examoogle.com • EE-2024-8821
Chapter 1 of 12 • Page 1 of 248🔒 Protected PDF • Watermarked
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கீழ்க்கண்ட தொடரை கவனமாகப் படித்துக் கேள்விக்குப் பதிலளிக்கவும் (அனைத்து எண்களும் ஒற்றை இலக்க எண்கள் மட்டுமே. இடமிருந்து வலமாக எண்ண வேண்டும்.)
(இடது) 9 1 7 5 1 1 4 7 2 1 9 5 4 8 5 6 6 8 7 6 8 1 5 7 6 2 8 (வலது)
ஒற்றைப்படை எண் எத்தனை உள்ளன, ஒவ்வொன்றும் ஒரு இரட்டைப்படை எண்ணுக்கு முன்னும் ஒரு இரட்டைப்படை எண்ணுக்குப் பின்னும் வருகின்றன?
3
5
2
4
3
Scan the sequence for odd digits (1, 5, 7, 9) and check if the digit immediately before and after them are both even (2, 4, 6, 8).
Scan the sequence for odd digits (1, 5, 7, 9) and check if the digit immediately before and after them are both even (2, 4, 6, 8).
Analyze the Sequence
List the full sequence: 9, 1, 7, 5, 1, 1, 4, 7, 2, 1, 9, 5, 4, 8, 5, 6, 6, 8, 7, 6, 8, 1, 5, 7, 6, 2, 8.
Identify Patterns
Look for triplets (Even, Odd, Even). Scanning: (4, 7, 2) is a match. Next, (8, 5, 6) is a match. Next, (6, 7, 6) is a match. (Note: other odd numbers like 1, 5, 9 either have at least one odd neighbor or are at the edge).
Verification
Total triplets found: (4, 7, 2), (8, 5, 6), and (6, 7, 6). The count is 3.
B: 5 is incorrect as there are not 5 such occurrences. C: 2 is incorrect as the count is exactly 3. D: 4 is incorrect as it overestimates the count of valid triplets.
A is correct because there are exactly 3 instances (4-7-2, 8-5-6, and 6-7-6) where an odd number is flanked by two even numbers.
In alphanumeric series questions, always write the series clearly on your rough sheet and use a pencil to underline or circle the required triplets to avoid skipping or double-counting.