How many 5s are there in the following number sequence which are immediately preceded by 7 and immediately followed by 6?
$7 5 5 9 4 5 7 6 4 5 9 8 7 5 6 7 6 4 3 2 5 6 7 8$
 

 

How many 6s are there in the following number series each of which is immediately preceded by 1 or 5 and immediately followed by 3 or 9 ?

2 6 3 7 5 6 4 2 9 6 1 3 4 1 6 3 9 1 5 6 9 2 3 1 6 5 4 3 2 1 9 6 7 1 6 3

How many 7s immediately preceded by 6 but not immediately followed by 4 are there in the following series?
7 4 2 7 6 4 3 6 7 5 3 5 7 8 4 3 7 6 7 2 4 0 6 7 4 3

How many $4$'s are there preceded by $7$ but not followed by $3$ ?

$\begin{array}{llllllllllllllllllll}5& 9& 3& 2& 1& 7& 4& 2& 6& 9& 7& 4& 6& 1& 3& 2& 8& 7& 4& 1\\ 3& 8& 3& 2& 5& 6& 7& 4& 3& 9& 5& 8& 2& 0& 1& 8& 7& 4& 6& 3\end{array}$

How many $3$'s are there in the following sequence which are neither preceded by $6$ nor immediately followed by $9$?

$9 3 6 6 3 9 5 9 3 7 8 9 1 6 3 9 6 3 9$

In the series; 

$6 4 1 2 2 8 7 4 2 1 5 3 8 6 2 1 7 1 4 1 3 2 8 6$

How many pairs of alternate numbers have a difference of $2$?

In the following number sequence, how many such even numbers are there which are exactly divisible by their immediate preceding number, but not exactly divisible by their immediate following number?

$3, 8, 4, 1, 5, 7, 2, 8, 3, 4, 8, 9, 3, 9, 4, 2, 1, 5, 8, 2$