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Problem
Problem
If
3
≤
a
≤
2015
,
3
≤
b
≤
2015
3 \le a \le 2015, 3 \le b \le 2015
3
≤
a
≤
2015
,
3
≤
b
≤
2015
such that
log
a
b
+
6
log
b
a
=
5
\log_a b + 6 \log_b a = 5
lo
g
a
b
+
6
lo
g
b
a
=
5
, the number of ordered pairs
(
a
,
b
)
(a, b)
(
a
,
b
)
of integers is a. 48 b. 50 c. 52 d. 54
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