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Let A={2,\ 3,\ 4,\ 5,\ .......\ 17 ,\ 18...

Let `A={2,\ 3,\ 4,\ 5,\ .......\ 17 ,\ 18}` . Let `' '` be the equivalence relation on `AxxA` , cartesian product of `A` with itself, defined by `(a ,\ b)(c ,\ d)` iff `a d=b c` . Then, the number of ordered pairs of the equivalence class of (3, 2) is (a) 4 (b) 5 (c) 6 (d) 7

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RD SHARMA ENGLISH-RELATIONS-All Questions
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