How many 8s are there in the following number | vedclass

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(C) We need to find the number of $8$s that satisfy two conditions:$1$. The digit immediately before $8$ must be $7$.$2$. The digit immediately after

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Three

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(C) We need to find the number of $8$s that satisfy two conditions:$1$. The digit immediately before $8$ must be $7$.$2$. The digit immediately after $8$ must $NOT$ be $4$.Let's analyze the sequence: $2, 3, 8, 2, 5, 7, 8, 3, 7, 8, 4, 6, 9, 8, 4, 3, 2, 7, 8, 9, 5, 7, 8, 1, 5, 2, 9$- First $8$ (at index $3$): Preceded by $3$. (Does not satisfy condition $1$)- Second $8$ (at index $7$): Preceded by $7$,followed by $3$. (Satisfies both conditions)- Third $8$ (at index $10$): Preceded by $7$,followed by $4$. (Does not satisfy condition $2$)- Fourth $8$ (at index $14$): Preceded by $9$. (Does not satisfy condition $1$)- Fifth $8$ (at index $19$): Preceded by $7$,followed by $9$. (Satisfies both conditions)- Sixth $8$ (at index $23$): Preceded by $7$,followed by $1$. (Satisfies both conditions)Thus,there are $3$ such $8$s.

How many $8$s are there in the following number sequence which are preceded by $7$ but not immediately followed by $4$?
$2, 3, 8, 2, 5, 7, 8, 3, 7, 8, 4, 6, 9, 8, 4, 3, 2, 7, 8, 9, 5, 7, 8, 1, 5, 2, 9$

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How many $8$s are there in the following number sequence which are preceded by $7$ but not immediately followed by $4$?$2, 3, 8, 2, 5, 7, 8, 3, 7, 8, 4, 6, 9, 8, 4, 3, 2, 7, 8, 9, 5, 7, 8, 1, 5, 2, 9$