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CAT 2020 Exam Shift 3 Solved Paper
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© examsnet.com
Question : 69
Total: 76
How many pairs
(
a
,
b
)
of positive integers are there such that
a
≤
b
and
a
b
=
4
2017
?
2017
2019
2020
2018
Validate
Solution:
Given,
a
⋅
b
=
4
2017
=
2
4034
Since
a
⋅
b
=
4
2017
, is a perfect square the number of factors of
2
4034
is odd.
Required answer, the number of values of
A
=
4034
+
1
+
1
2
=
2018
© examsnet.com
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