Question
Out of all the 2-digit integers between 1 and 100, a 2-digit number has to be selected at
random.
What is the probability that the selected number is not divisible by 7?
Answer: Option D
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The number of 2 digit multiples of 7 = 13
`:.` Probability of choosing a number
Not divisible by 7= `(90 - 13)/90` = `77/90`
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