151.Cards bearing numbers 3 to 20 are placed in a bag and mixed thoroughly. A card is taken out from the bag at random. What is the probability that the number on the card taken out is an even number.
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152.A die is thrown once. Find the probablity of setting ‘a’ prime number.
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153.A die is thrown once. Find the probability of gettings ‘a number divisible by 2.’
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154.
A die thrown once. Find the probability of getting (i) an even prime number (ii) a multiple of 3
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155.A bag contain 4 red and 5 white balls. Two balls are drawn at random. Write the sample space.
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156.From a goup of 3 boys and 3 girls. If we select one child write the sample space of this experiment.
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157.What is the combine probability of a favorable and unfavorable event.
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write 1 - P 
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