KCET · Maths · Functions
The Set A has \( 4 \) elements and the Set B has \( 5 \) elements then the number of injective mappings
that can be defined from A to B is
- A \( 144 \)
- B \( 72 \)
- C \( 60 \)
- D \( 120 \)
Answer & Solution
Correct Answer
(D) \( 120 \)
Step-by-step Solution
Detailed explanation
Given that, \( n(A)=4 \) and \( n(B)=5 \).
Number of injective mappings that can be define from \( A \) to \( B \) is given by
\( (n(B)) !=5 !=120 \)
Number of injective mappings that can be define from \( A \) to \( B \) is given by
\( (n(B)) !=5 !=120 \)
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