write the contrapositive of : if a number is divisible by 9, then it is divisible by 3. Share with your friends Share 0 Ishan Pradhan answered this if a number is not divisible by 9,then it is not divisible by 3 2 View Full Answer Jahnvi answered this If the number is not divisible by 3, then it is not divisible by 9. 5 Aishu answered this Write the Contra positive if a number is divisible by 9 and if it is disabled by 3 also 0