Mathematics - Sets and Relations Question with Solution | TestHub

Let$A=\left\{2,3,4,5,\dots .,30\right\}$and$\text{'}\simeq \text{'}$be an equivalence relation on$A\times A,$defined by$\left(a,b\right)\simeq \left(c,d\right),$if and only if$ad=bc$. Then the number of ordered pairs which satisfy this equivalence relation with ordered pair$\left(4,3\right)$is equal to :