1. The four-byte sequence 0xA7 0xDB 0xDD 0x72 stored in consecutive memory cells in a little-endian architecture represents ___________ (decimal) when interpreted as a 32-bit signed integer.

2. The four-byte sequence 0x8B 0x6A 0x73 0x86 stored in consecutive memory cells in a little-endian architecture represents ___________ (decimal) when interpreted as a 32-bit signed integer.

3. The four-byte sequence 0x22 0x88 0x8A 0x56 stored in consecutive memory cells in a little-endian architecture represents ___________ (decimal) when interpreted as a 32-bit unsigned integer.