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TS EAMCET · Maths · Basic of Mathematics

If α and β are the greatest divisors of nn2-1 and 2nn2+2 respectively for all nN, then αβ=

  1. A 18
  2. B 36
  3. C 27
  4. D 9
Verified Solution

Answer & Solution

Correct Answer

(B) 36

Step-by-step Solution

Detailed explanation

For n∈N⇒n=1, 2, 3… The values of nn2-1 are n=1⇒11-1=0 n=2⇒24-1=23=6 n=3⇒39-1=24… The values of 2nn2+2 are, n=1⇒21+2=6 n=2⇒2222+2=46=24 n=3⇒2332+2=611=66… ∴ Greatest divisors of α and β…