Answer: the probability is 0.1515 or 15.15%
Explanation: the possible results for the coin are two, so each result has a 1/2 = 0.5 probability, while the results for the spinner are 3, wich means that each possible result has a possibility equal to 1/3 = 0.33
So the probability of having the resulting tail in the coin is equal to 0.5, and one for the number 3 in the spinner is equal to 0.33, and the joint probability (the probability of both events happening in the same experiment or toss in this case) is equal to the product of both probabilities; so the probability that the next toss will result in 3 and tails is equal to 0.33*0.50 = 0.1515
If we want to write it as a percentage, we must multiply it by 100%
0.1515*100% = 15.15%