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Q.

Let A and B be any two independent events. If α and ß are any two positive real numbers such that αPAB+βPA¯B=23Then 9α2+β2can take the value (s)

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a

5

b

3

c

6

d

4

answer is A, B, D.

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Detailed Solution

First Equation Components:

  • αp - Greek letter alpha with subscript p
  • P1 - P with superscript 1
  •  
  • Boxed fractions - A/B and A/B (where A represents A with an overline)
  • βp - Greek letter beta with subscript p
  • √(α2 + β2) - Square root of alpha squared plus beta squared
  •  
  • Inequality symbol - Less than or equal to (≤)

Second Equation Components:

  • 2/3 - Two thirds fraction
  • - Less than or equal to
  • √(α2 + β2) - Square root of alpha squared plus beta squared
  • - Implies (double arrow)
  • α2 + β2 - Alpha squared plus beta squared
  • - Greater than or equal to
  • 4/9 - Four ninths fraction

Mathematical Interpretation:

The first equation shows a relationship involving probability functions P with fractions A/B and their complements A/B, bounded by the square root of the sum of squares of α and β.

The second equation demonstrates an inequality that if 2/3 is less than or equal to the square root of (α² + β²), then α² + β² must be greater than or equal to 4/9.

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