What is the cache block size $($in words

b$)$ How many entries does the cache have?

c$)$ Starting from power on$,$ the following byte$-$addressed cache references are recorded

$($addresses are in decimal$)$:

$0,4,16,132,232,160,1024,30,140,3100,180,2180$

c$\mathrm{.}1)$ How many blocks are replaced?

c$\mathrm{.}2)$ What is the hit ratio?