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If m=number of distinct rational numbers...

If m=number of distinct rational numbers `p/q epsilon(0,1)` such that `p,qepsilon{1,2,3,4,5} and n=number` of maping form {1,2,3} onto {1,2}` then m-n is (A) 1 (B) -1 (C) 0 (D) none of these

A

23

B

32

C

36

D

None of these

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The correct Answer is:
a
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