Class 12 Relations And Functions · Mcq Single Correct1 Markscounting_functions Class 12 Maths · Relations And Functions · Mcq Single Correct #85 If \(|A|=4\) and \(|B|=5\), the number of one-one and onto mappings from \(A\) to \(B\) is (A) 0(B) \(4^5\)(C) \(5^4\)(D) None of these