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Recursion
easy
0:00.0
If
T
n
=
T
n
−
1
+
n
T_n = T_{n-1} + n
T
n
=
T
n
−
1
+
n
and
T
1
=
1
T_1 = 1
T
1
=
1
, what is
T
3
T_3
T
3
?
A
4
4
4
B
7
7
7
C
6
6
6
D
3
3
3
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