Each number (except 100) can be expressed as 3 × power of 2: 12=3×4 (2^2), 48=3×16 (2^4), 384=3×128 (2^7), 768=3×256 (2^8), 3072=3×1024 (2^10). The number 100=3×33.33 doesn't fit this pattern and cannot be expressed as 3 times a power of 2. Alternatively, all others are divisible by 12 or 3, but 100 is not.