Question
Download Solution PDF72n + 16n - 1 is divisible by (n ∈ N):
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCalculation:
S = 72n + 16n - 1
For n = 1
S = 49 + 16 - 1 = 64
For n = 2
S = 2401 + 32 - 1 = 2432 = 64 × 32, which is divisible by 64
∴ Option 1 is correct
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