IIT JEE , AIEEE Forum - Mathematics , Algebra

eragon007

ans 2) try getting a ODD num atmost once
           1         2          3
cases y         n          n   prob =(1/2)*(1/2)*(1/2)
           n         y          n   prob=    "             "
           n         n          y   prob= "        "
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ans 1)

ans(2)+ y y    n prob = ''    "
   y y    y and so on
   n y    y
   y n    y

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