MathDB
Problems
Contests
National and Regional Contests
India Contests
India IOQM
2020-21 IOQM India
17
17
Part of
2020-21 IOQM India
Problems
(1)
IOQM 2021 P17
Source:
1/17/2021
How many two digit numbers have exactly
4
4
4
positive factors?
(
(
(
Here
1
1
1
and the number
n
n
n
are also considered as factors of
n
.
)
n. )
n
.
)
IOQM