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CBSE XII
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Math
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Relations and Functions
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If the set A contains 5 elements and the set B contains 6 elements, then the number of one-one and onto mappings from A to B is
\begin{array}{1 1}(A)\quad 720 & (B)\quad 120\\(C)\quad 0 & (D)\quad none\; of\; these\;\end{array}
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