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    Mathematics: Post your doubts here!

    In a group of 30 teenagers, 13 of the 18 males watch "K&K" on TV and 3 of th 12 females watch "K&K". (i) FInd the probability that a person chosen at random from the group is either female or watches "K&K" or both. I tried: 12/30 + 16/30 - 3/12 = 0.6833 but the answer is 5/6 = 0.833 anyone?????
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