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Maths | AP Board | Grade 12 | 2012
Q. Find the number of ways of arranging the letters of the word, CORRUPTION.
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Q. If 1, 2 and α are the roots of the equation 2x3+x27x6=0, then find α.
  1. 32
  2. 32
  3. 12
  4. 12
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Q. If A=121102011, find the rank of A.
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Q. Find the probability that a non-leap year contain 53 Sundays.
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Q. If A=[123321] and B=[321123], find 3B2A.
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Q. If nP5:n1P5=3:2, find n.
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Q. If the letters of the word EAMCET are permitted in all possible ways and if the words thus formed are arranged in the dictionary order, find the rank of the word EAMCET.
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Q. Simplify: 34C5+4r=0(38r)C4.
  1. 38C4
  2. 39C5
  3. 39C4
  4. 38C5
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Q. If X is a Poisson's variate such that P(X=1)=3P(X=2), then find the variance of X.
  1. 38
  2. 13
  3. 54
  4. 23
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Q. Solve the equation x410x3+26x210x+1=0.
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Q. Let A and B be independent events with P(A)=0.2, P(B)=0.5. Then find:
(i) P(A|B)
(ii) P(B|A)
(iii) P(AB)
(iv) P(AB)
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Q. Write the middle terms in the expansion of (3x72y)10.
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Q. Write the coefficient of xn in the expansion of eabx.
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Q. Find the maximum or minimum value of the quadratic expression 2x75x2.
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