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Let A $= \{2, 3, 4, 5, ...., 30\}$ and '$\equiv | FirstInTest be an equivalence relation on A $\times$ A, defined by $(a, b) \equiv (c, d)$, 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 : - FirstInTest | FirstInTest