An integer is choosen between 40 to 80 .what is the probability that it is not divisible by 7
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number of integers between 40 and 80 = 39
number of integers between 40 and 80 which are divisible by 7 = 6(42,49,56,63,70,77)
do probability that integer is not divisible by 7 = (39-6)/39 = 33/39= 11/13
number of integers between 40 and 80 which are divisible by 7 = 6(42,49,56,63,70,77)
do probability that integer is not divisible by 7 = (39-6)/39 = 33/39= 11/13
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