1, and the probability of red ball appearing twice is p = 0.1x 0.1= 0.01;
2. The probability of taking out the red ball three times p = 0.1x 0.1x 0.1= 0.001;
3. The probability of taking out the red ball four times p = 0.1x 0.1x 0.1x 0.1= 0.0001;
4. The probability of taking out the red ball five times p = 0.1x 0.1x 0.1x 0.1= 0.00001;
. . .