The probability that house sales will increase in the next 6 months is estimated to be 0.25. The

probability that the interest rates on housing loans will go up in the same period is estimated to

be 0.74. The probability that house sales or interest rates will go up during the next 6 months is

estimated to be 0.89. The probability that house sales will increase but interest rates will not

during the next 6 months is?