Solved papers for JEE Main & Advanced JEE Main Paper (Held On 10 April 2015)

done JEE Main Paper (Held On 10 April 2015) Total Questions - 1

• question_answer1) Let X be a set containing 10 elements and P(X) be its power set. If A and B are picked up at random from P(X), with replacement, then the probability that A and B have equal number of elements, is : JEE Main Online Paper (Held On 10 April 2015)
  A)
  \[\frac{({{2}^{10}}-1)}{{{2}^{20}}}\]                         
  done clear
  B)
  \[\frac{({{2}^{10}}-1)}{{{2}^{10}}}\]
  done clear
  C)
  \[\frac{^{20}{{C}_{10}}}{{{2}^{10}}}\]                     
  done clear
  D)
  \[\frac{^{20}{{C}_{10}}}{{{2}^{20}}}\]
  done clear
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