Answer:
The four verb aspects are: simple aspect - The action is happening at the moment the story is told. progressive (or continuous) aspect - The action is ongoing. perfect aspect - The action is no longer happening.
Well, technically, you don't need insurance to drive a car. However, it is very important, and highly recommended. If you're vehicle happens to be stolen, or destroyed in any way, you have to pay for the issue out-of-pocket. That would really hurt bad financially, so without paying insurance, you're at a large risk.
Odd. Hence +1
r
+
1
is even, and one of
p
and
q
must be 2
2
. We may assume that =2
p
=
2
. Then we get 2=+1
2
q
=
r
+
1
and
8+22=2+1=(+1)(−1)+2=2(2−2)+2,
8
+
2
q
2
=
r
2
+
1
=
(
r
+
1
)
(
r
−
1
)
+
2
=
2
q
(
2
q
−
2
)
+
2
,
implying 22−4−6=0
2
q
2
−
4
q
−
6
=
0
or (−3)(+1)=0
(
q
−
3
)
(
q
+
1
)
=
0
. This has =3
q
=
3
as only prime solution, hence =3
q
=
3
and =2−1=5
r
=
2
q
−
1
=
5
.
In conclusion, there are two solutions: (,,)=(2,3,5)
(
p
,
q
,
r
)
=
(
2
,
3
,
5
)
and (,,)=(3,2,5)
(
p
,
q
,
r
)
=
(
3
,
2
,
5
)
.
