We are given the sequence PQ2ED2SA925EAGSEF629. We need to find how many consonants are immediately preceded by a vowel and immediately followed by a number.
1. PQ2:
P is preceded by Q (not a vowel) and followed by 2 (invalid consonant condition).
2. ED2:
D is preceded by E (vowel) and followed by 2 (valid consonant condition).
3. SA9:
S is preceded by A (vowel) and followed by 9 (valid consonant condition).
4. EAG:
G is preceded by A (vowel) and followed by 6 (valid consonant condition).
5. SEF:
F is preceded by E (vowel) and followed by 6 (valid consonant condition).
The valid consonants are: D, S, G, F.
Thus, there are 4 consonants that satisfy the condition.