How many such digits are there in the following sequence, each of which is immediately preceded as well as immediately followed by a letter?
A B 7 C D 9 Z Y * P 2 M © K S 3 ↑ 5 N T 9
1
Three
2
One
3
Two
4
Four
How many such digits are there in the following sequence, each of which is immediately preceded as well as immediately followed by a letter?
A B 7 C D 9 Z Y * P 2 M © K S 3 ↑ 5 N T 9