Question

A two digit number is formed with the digits 2,3,5,7,9 with repetition what is the probidity that number from is an add number?​

Answer 1

Answer:

$Digits \: are {22,23,25,27,29,32,33,35,37,39,52,53,55,57,59,72,73,75,77,79,92,93,95,97,99} \\ ∴Total \: digits \: are  \: 25 \\ Odd \: numbers \: are  \: 20 \\ ∴ probability \: that \: an \: odd \: number \: is \: formed \: is \\ \frac{20}{25} = \frac{4}{5} \\ a \: multiple \: of  \: 5 \\ Numbers \: which \: are \: multiple \: of \: 5 \: are \\ {25,35,55,75,95} \\ ∴ probability \: of \: multiple \: of \: 5 \: is  \\ \frac{5}{25} = \frac{1}{5} </p><p></p><p></p><p></p><p></p><p></p><p>$

Step-by-step explanation:

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