$1.$ Given char a$=4,$ b$=7,$ c$=9,$ find the decimal values of the following expressions:$1)$ a&b&c $2)$ a&b$|$c $3)$ a$^$b$^$c$4)$ a $||$ b $5)$ a && c$2.$ Given char y$=28,$ find the decimal values of the following expressions:$1)$ y & y $2)$ y& $0$x$0$f $3)$ y $<<24)$ y $>>25)$ y $>>33.$ Determine the size:$1)$ int arr$2$D$[4][5]$; $2)$ float arr$3$D$[2][3][4]$;$3)$ struct test$1\{$int num; char a$[10]$; char $*$name;$\}$ t$1$;$4)$ union test$2\{$int a; float b;$\}$ t$2$; $5)$ struct test$3\{$float a; struct test$1$ b;$\}$ t$3$;