In the series : 7 8 9 7 6 5 3 4 2 8 9 7 2 4 5 9 2 9 7 6 4 7
How many 7's are preceded by 9 and followed by 6 ?
In the following list of numerals, how many 2's are followed by l's but not
preceded by 4 ?
4 2 1 2 1 4 2 1 1 2 4 4 4 1 2 2 1 2 1 4 4 2 1 4 2 1 2 1 2 4 1 4 2 1 2 4 1 4 6
How many 7's are there in the following series which are preceded by 6 which
is not preceded by 8 ?
8 7 6 7 8 6 7 5 6 7 9 7 6 1 6 7 7 6 8 8 6 9 7 6 8 7
Count each 1 in the following sequence of numbers that is immediately followed
by 2, if 2 is not immediately followed by 3. How many such l's are there ?
1 2 1 3 4 5 1 2 3 5 2 1 2 6 1 4 5 1 1 2 4 1 2 3 2 1 7 5 2 1 2 5
How many 7's are there in the following series which are not immediately fol-
lowed by 3 but immediately preceded by 8 ?
8 9 8 7 6 2 2 6 3 2 6 9 7 3 2 8 7 2 7 7 8 7 3 7 7 9 4