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Let A = (1,2, 3, 4, 5, ..., 30) and ~=be...

Let `A = (1,2, 3, 4, 5, ..., 30)` and `~=`be an equivalence relation on `AxxA`, defined by (a,b) `~=`(c,d)` if and only if ad=bc. Then the number of ordered pairs which satisfy this equivalence relation with ordered pair (4,3) is equal to :

A

8

B

5

C

7

D

6

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-Mathematic section A
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