List (iv) {0, 1, 2, 3} is the correct sample space because three tossed coins can yield 0, 1, 2 or 3 heads. The other lists either omit possible outcomes or include an impossible outcome.
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The bag contains 3 distinct candies, giving a total of 3 possible outcomes. Since there is only 1 strawberry candy, the probability is 1 / 3 (approximately 0.333 or 33.3%).
The correct term is relative frequency and its value is 15 / 50 = 3 / 10 = 0.3. While 15 is the absolute count (frequency), dividing by the total 50 students gives the relative frequency.
Labeling fruits as A1, O1, O2 for basket A and B1, M1 for basket B gives 6 equally likely outcomes. The sample space is {(A1, B1), (A1, M1), (O1, B1), (O1, M1), (O2, B1), (O2, M1)}. P(Apple, Banana) = 1/6.
In an illustrative 20-toss trial getting 11 heads and 9 tails, experimental probability of heads is 11 / 20 = 0.55. For the next toss, because a coin has no memory, tails probability remains 1 / 2 = 0.5.