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प्रश्न
Write the total number of possible outcomes in a throw of 3 dice in which at least one of the dice shows an even number.
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उत्तर
Total number of outcomes when 3 dice are thrown = `6xx6xx6=216`
Number of outcomes in which there is an odd number on all the three dice =`3xx3xx3=27`
∴ Number of outcomes in which there is an even number at least on one dice = {Total possible outcomes}- {Number of outcomes in which there is an odd number on all the three dice } =`216xx27=189`
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