AP EAMCET · Maths · Functions
If set A has 5 elements, set B has 7 elements then the number of many one functions that can be defined from \(A\) to \(B\) is
- A \(7^5-7\)
- B \(5^7-5\)
- C \(5^7-{ }^7 P_5\)
- D \(7^5-{ }^7 P_5\)
Answer & Solution
Correct Answer
(D) \(7^5-{ }^7 P_5\)
Step-by-step Solution
Detailed explanation
Total number of functions from \(A\) to \(B=7^5\) Number of one one functions from \(A\) to \(B={ }^7 P_5\) Number of many one functions \(=7^5-{ }^7 P_5\).
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