The inverse proposition of the proposition "if a number is negative, then its square is positive" is______ .

The inverse proposition of the proposition "if a number is negative, then its square is positive" is______ .

According to the definition of inverse proposition, we only need to exchange the condition and conclusion, so the inverse proposition of the original proposition is: if the square of a number is positive, then it is negative. So the answer is: if the square of a number is positive, then it is negative