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(D) We need to find the number of $5$s that satisfy two conditions:$1$. It is not immediately preceded by $3$ (i.e.,the pattern is not $3, 5$).$2$. It

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$4$

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(D) We need to find the number of $5$s that satisfy two conditions:$1$. It is not immediately preceded by $3$ (i.e.,the pattern is not $3, 5$).$2$. It is immediately followed by $7$ (i.e.,the pattern is $5, 7$).Let's examine the series: $1, 5, 7, 3, 5, 7, 4, 7, 3, 7, 2, 5, 6, 5, 8, 5, 7, 4, 5, 6, 5, 5, 7, 1, 5, 7, 7, 5, 5$- The first $5$ is followed by $7$ and preceded by $1$. (Matches)- The second $5$ is followed by $7$ but preceded by $3$. (Does not match)- The third $5$ is followed by $8$. (Does not match)- The fourth $5$ is followed by $7$ and preceded by $8$. (Matches)- The fifth $5$ is followed by $6$. (Does not match)- The sixth $5$ is followed by $5$. (Does not match)- The seventh $5$ is followed by $7$ and preceded by $5$. (Matches)- The eighth $5$ is followed by $7$ and preceded by $1$. (Matches)- The ninth $5$ is followed by $5$. (Does not match)- The tenth $5$ is followed by nothing. (Does not match)Counting the matches,we find there are $4$ such $5$s.

In the series given below,count each $5$ which is not immediately preceded by $3$ but is immediately followed by $7$. How many such $5$ are there?
$1, 5, 7, 3, 5, 7, 4, 7, 3, 7, 2, 5, 6, 5, 8, 5, 7, 4, 5, 6, 5, 5, 7, 1, 5, 7, 7, 5, 5$

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In the series given below,count each $5$ which is not immediately preceded by $3$ but is immediately followed by $7$. How many such $5$ are there?$1, 5, 7, 3, 5, 7, 4, 7, 3, 7, 2, 5, 6, 5, 8, 5, 7, 4, 5, 6, 5, 5, 7, 1, 5, 7, 7, 5, 5$