an integer is chosen between 40 and 80 what is the probability that it is not divisible by 7
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40 t0 80 there are 38 integer out of which 6 comes in the table of 7 so the probability is 31/38
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Favourable outcome is 41 43 44 45 46 47 48 50 51 52 53 54 55 57 58 59 60 61 62 64 65 66 67 68 69 71 72 73 74 75 76 78
Probability = favourable outcome/ total outcome
Probability = 35/41
Probability will be in ratio that is 35: 41
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