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Anjali86

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Everything posted by Anjali86

  1. MUTUALLY EXCLUSIVE means events not occurring at same time i.e. Independent :D
  2. Well Limit n -> Inf THEN S -> 1 BUT it will never be EXACTLY equal to 1, Hence answer is B
  3. 1. d=5.03894 and D is the decimal expression for d rounded to the nearest thousandth. The number of decimal places where d and D differ 4 d = 5.03894 d rounded to thousandth = 5.039 The number of decimal places where d and D differ = 2 & 2 So answer is B 4. If x is an integer and square of x A 5 B6 C10 D12 E36 greatest value = +6 => (+6)^2 least value = -6 => (-6)^2 So, +6 - (-6) = 12 => D
  4. 200 gms = 10% Suger => Total Solution = S = 2000 gms Ist Solution => 10% suger 2nd Solution => x% suger Mixture => 16% suger x 500 + 10 (S - 500) = 16 S x 500 - 5000 = 6 S x = (12000 + 5000 ) / 500 x = 34 :)
  5. Standard Deviation Definition: Standard deviation is a statistical measure of spread or variability.The standard deviation is the root mean square (RMS) deviation of the values from their arithmetic mean. Formula: Standard Deviation http://easycalculation.com/statistics/image/sd.jpg Population Standard Deviation http://easycalculation.com/statistics/image/popsd.jpg where Σ = Sum of X = Individual score M = Mean of all scores N = Sample size (Number of scores) Link: Learn Standard Deviation tutorial, definition, example, formula Hope now u can easily understand
  6. Anjali86

    Square problem

    If a = side of N & b = side of M then As given in figure, a + b = 2 & area of M = 4N => b2 = 4a2 Solving these two equations, b = 2 - a b = 2a subtracting, 0 = 2 - a - 2a 3a = 2 a = 2/3 :)
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