Two digit number are to made using the digits 3,5,6 and 8, without repetition of digits . Find the probability of the following events( 1) the number is odd. (2) the number is divisible by 9.
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posiblity of having odd =9/12=3/4
prob. of number divisible by 9=12/12=1
prob. of number divisible by 9=12/12=1
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