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JEE Main Math Class 11 Relations and Functions Part 2 Questions
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© examsnet.com
Question : 22
Total: 95
The function
f
:
N
−
{
1
}
→
N
; defined by
f
(
n
)
=
the highest prime factor of
n
, is :
[27-Jan-2024 Shift 1]
both one-one and onto
one-one only
onto only
neither one-one nor onto
Validate
Solution:
👈: Video Solution
f
:
N
−
{
1
}
⟶
N
f
(
n
)
=
The highest prime factor of
n
.
f
(
2
)
=
2
f
(
4
)
=
2
⇒
many one
4
is not image of any element
⇒
into
Hence many one and into
Neither one-one nor onto.
© examsnet.com
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