According to the production rules for Mini$-$Triangle shown at the end of this paper, which of the following are Mini$-$Triangle expressions?

a$)$ true

b$)sin(x)$

c$)-n$

d$)m2=n$

e$)m-n**2$

$2$ According to the production rules for Mini$-$Triangle shown at the end of this paper, which of the following are Mini$-$Triangle commands?

a$)n$:$=n+1$

b$)$ halt

c$)$ put $(m,n)$

d$)$ if $n>m$ then $m$:$=n$

e$)$ while $n>0$ do $n$ : $=n-1$

$3$ According to the production rules for Mini$-$Triangle shown at the end of this paper, which of the following are Mini$-$Triangle declarations?

a$)$ const pi $-3\mathrm{.}1415$

b$)$ const $y-x+1$

c$)$ var b: Boolean

d$)$ var m$,$ n: Integer

e$)$ var y: Integer; const dpy $-365$

Mini$-$Triangle Production Rules