How many such 4s are there in the following n | vedclass

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(C) We need to find the number $4$ such that it is followed by $5$ (pattern $4, 5$) and not preceded by $3$ (pattern $x, 4, 5$ where $x 
eq 3$).Let's

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(C) We need to find the number $4$ such that it is followed by $5$ (pattern $4, 5$) and not preceded by $3$ (pattern $x, 4, 5$ where $x 
eq 3$).Let's analyze the series: $5, 4, 4, 3, 3, 4, 5, 4, 5, 5, 3, 4, 4, 3, 4, 5, 4, 3, 3, 5, 4, 5, 4, 3, 5, 4, 4, 3, 5, 4$.$1$. Look for $4, 5$ patterns:- $5, 4, 5$ (Preceded by $5$,which is not $3$. Valid)- $4, 5$ (Preceded by $4$,which is not $3$. Valid)- $4, 5$ (Preceded by $4$,which is not $3$. Valid)- $4, 5$ (Preceded by $3$. Invalid)- $4, 5$ (Preceded by $4$,which is not $3$. Valid)Wait,let's re-examine the sequence carefully:$5, 4, 4, 3, 3, 4, 5, 4, 5, 5, 3, 4, 4, 3, 4, 5, 4, 3, 3, 5, 4, 5, 4, 3, 5, 4, 4, 3, 5, 4$Pairs of $4, 5$:- $...3, 4, 5...$ (Preceded by $3$,invalid)- $...4, 5, 5...$ (Preceded by $4$,valid)- $...3, 4, 5...$ (Preceded by $3$,invalid)- $...4, 5, 4...$ (Preceded by $4$,valid)There are $2$ such occurrences.

How many such $4$s are there in the following number series,each of which is immediately followed by $5$ but not immediately preceded by $3$?
$5, 4, 4, 3, 3, 4, 5, 4, 5, 5, 3, 4, 4, 3, 4, 5, 4, 3, 3, 5, 4, 5, 4, 3, 5, 4, 4, 3, 5, 4$

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How many such $4$s are there in the following number series,each of which is immediately followed by $5$ but not immediately preceded by $3$?$5, 4, 4, 3, 3, 4, 5, 4, 5, 5, 3, 4, 4, 3, 4, 5, 4, 3, 3, 5, 4, 5, 4, 3, 5, 4, 4, 3, 5, 4$