Question to test your Basic Concepts of Probability knowledge

Question

In a security contest, participants guess a $4$ -digit code. Each digit ranges from $0$ to $9$ , digits can repeat, and the winning code is generated randomly. The random variable $x$ represents the number of digits guessed correctly in their appropriate positions.
The following table shows the probabilities of correctly guessing $0$ , $1$ , $2$ , $3$ , or $4$ digits:

Find the probability of guessing $2$ or more digits.

The following table shows the probabilities of correctly guessing $0$ , $1$ , $2$ , $3$ , or $4$ digits:

Find the probability of guessing $2$ or more digits.

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