alleryவரிசை அளவுகள் சமமாக உயரும்; வரிசை 4 இல் 19 மற்றும் வரிசை 10 இல் 49 உள்ளது. வரிசை 15 அளவு?
A79
B74
C69
D84
Answer & Solution
Correct answer: B. 74
ஒரு வரிசையின் அதிகரிப்பு (49 - 19) ÷ 6 = 5, எனவே வரிசை 15 இல் 49 + 5 × 5 = 74 உள்ளது.
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