Correct Answer - Option 3 : 64
Data:
RAM chip's capacity = 32 K × 1 = 32 ×1024 × 1 bits
Memory Capacity = 256 K byres = 256 ×1024 × 8 bits
Formula:
\({\rm{No\;of\;chips\;needed}} = \frac{Memory \; Capacity}{RAM\;Chip's\; Capacity} \)
Calculation:
\({\rm{No\;of\;chips\;needed}} = \frac{256 \times 1024 \times 8}{32 \times 1024 \times 1} = 64\;chips\)