Define two relations R1 and R2 on set positive integers. R, = {(a,b)|a > b} and R2= {(a,b)|a? = b }. Which of the following are in R2° R1: %3D %3D а. (3, 4) O b. (3,2) С. (3,9) O d. (3,16) O e. All of the choices

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