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Recursion
easy
0:00.0
Find
a
1
a_1
a
1
if
a
n
=
a
n
−
1
a_n = \sqrt{a_{n-1}}
a
n
=
a
n
−
1
and
a
2
=
2
a_2 = 2
a
2
=
2
.
A
2
B
4
C
8
D
16
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