1_____2_____3_____4_____5_____6
Q.stem: Car A & B are parked next to each other.
St1: Car B & C are parked in even numbered spaces
Case1: Assume B&C are parked in 2&4, then A&B can be parked in 5|6 and it is possible for F to be parked in 1
Case2: Assume B&C are parked in 4&6, then A&B can be parked in 1|2 and F cannot be in 1
Hence St1 is not sufficient
St2: Car D & E are parked in odd numbered spaces
Case1: D&E in 1&3, then A|B can be in 4|5 or 5|6, F cannot be in 1
Case2: D&E in 1&5, then A|B can be in 2|3 or 3|4, F cannot be in 1
Case3: D&E in 3&5, then A|B have to be in 1|2, F cannot be in 1
St 2 is sufficient for me to say that car F is not parked in space 1
That's my read of the question.