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TS EAMCET · Maths · Mathematical Induction

For all n,22n+1+32n+1 is divisible by

  1. A 7
  2. B 5
  3. C 11
  4. D 8
Verified Solution

Answer & Solution

Correct Answer

(B) 5

Step-by-step Solution

Detailed explanation

For all n∈ℕ,22n+1+32n+1 is divisible by Let Pn be the statement given by Pn:22n+1+32n+1 here n=1 P1:22n+1+32n+1 =22×1+1+32×1+1 =35=5×7 Divisible by 5 P1 is true Let Pm be true Pm=22m+1+32m+1=5λ 22m+1=5λ-32m+1................i Pm is true Let…