alleryநான்கு உறுப்புகளைக் கொண்ட ஒரு தொடர் 7 இல் தொடங்கி, ஒவ்வொரு படியிலும் 3 குறைகிறது. கடைசி உறுப்பு என்ன?
A-1
B-2
C-3
D4
Answer & Solution
Correct answer: B. -2
உறுப்புகள் 7, 4, 1, -2 என அமைகின்றன, எனவே நான்காவது உறுப்பு -2 ஆகும்.
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