The probability, that in a randomly selected | vedclass

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Question

$=$ exactly two digits are odd $+$ exactly there 3 digits are odd

For exactly three digits are odd

For exactly two digits odd :

If $0$ is use

Vedclass · Accepted Answer

$\frac{19}{36}$

Vedclass · Answer

$=$ exactly two digits are odd $+$ exactly there 3 digits are odd

For exactly three digits are odd

For exactly two digits odd :

If $0$ is used then $: 2 	imes 5 	imes 5=50$

If $0$ is not used then : ${ }^{3} C _{1} 	imes 4 	imes 5 	imes 5=300$

Required Probability $=\frac{475}{900}=\frac{19}{36}$

The probability, that in a randomly selected $3-$digit number at least two digits are odd, is

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