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Mathematics
Mathematics
Problem
Find
r
r
r
if (i)
5
P
r
=
2
⋅
6
P
r
−
1
{}^5P_r = 2 \cdot {}^6P_{r-1}
5
P
r
=
2
⋅
6
P
r
−
1
a.
5
P
r
=
2
⋅
6
P
r
−
1
{}^5P_r = 2 \cdot {}^6P_{r-1}
5
P
r
=
2
⋅
6
P
r
−
1
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