d into equal parts, with 4 sections labeled A, E, I, and O. The probability of spinning a vowel on the first spin is 4/4 = 1.
Using a tree diagram, we can show the possible outcomes when spinning the spinner twice:
A E I O
/ \ / \ / \ / \
A E A E A E A E
/ \ / \ / \ / \ / \ / \ / \ / \
A E A E A E A E A E A E A E A E
The probability of landing on a vowel on the second spin is also 4/4 = 1.
Using the multiplication rule of probability, we can find the probability of landing on a vowel both times:
P(vowel on first spin) x P(vowel on second spin) = 1 x 1 = 1
Therefore, the probability of landing on a vowel both times if the spinner is spun twice is 1 or 100%.