**Solution:**

We have,

Total possible outcomes = number of red balls.

(i) Number of favourable outcomes for black balls = 0

Hence, P(black ball) = 0

(ii) Number of favourable outcomes for red balls = number of red balls

Hence, P(red ball) = 1

**Solution:**

We have,

Total possible outcomes = number of red balls.

(i) Number of favourable outcomes for black balls = 0

Hence, P(black ball) = 0

(ii) Number of favourable outcomes for red balls = number of red balls

Hence, P(red ball) = 1