JEE Main 202228 Jun, Morning shiftMathematicsMediumSets, Relations and Functions168× since 2002
Let R₁ and R₂ be relations on the set {1, 2, ......., 50} such that
R₁ = {(p, p^n) : p is a prime and n 0 is an integer} and
R₂ = {(p, p^n) : p is a prime and n = 0 or 1}.
Then, the number of elements in R₁ R₂ is _______________.