Guest Session: 1 Question Remaining.
Create Account
to save progress.
Login
Arithmetic Sequences
easy
0:00.0
Find
a
2
a_2
a
2
if
a
1
=
10
,
d
=
−
1
a_1=10, d=-1
a
1
=
10
,
d
=
−
1
.
A
9
9
9
B
11
11
11
C
10
10
10
D
8
8
8
Submit Answer