Explanation

Device 1:
No because Device1 is in group3 which has Policy1 assigned which requires BitLocker.
Device 2:
No because Device2 is in group3 which has Policy1 assigned which requires BitLocker. Device2 is also in Group2 which has Policy2 assigned but the BitLocker requirement is not configured in Policy2.
Device3:
Yes because Device3 is in Group2 which has Policy2 assigned but the BitLocker requirement is not configured in Policy2.
Reference:
https://blogs.technet.microsoft.com/cbernier/2017/07/11/windows-10-intune-windows-bitlocker-management-ye