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1. a2=ba a=2b a0,b0

  • A. 2,4
  • B. 2,4
  • C. 2,4
  • D. 2,4

Answer: Option B

Explanation:

ab = ba এবং = 2b

= > (2b)b = b2b [∵a = 2b]

= > 2b .bb = b2b

= > 2b = (b2b/bb)

= > 2b = b2b - b

= > 2b = bb

∴ b = 2

∴ a = 2x2

= 4

∴ (a, b) = (4, 2)


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