Victoria spins the spinner 18 times, and it stops at the letter 'B' 10 times. If she spins the spinner a 20th time, what is the theoretical probability that this time it will stop at the letter 'B'?

1 over 20
1 over 18
1 over 14
1 over 10

Victoria spins the spinner 18 times and it stops at the letter B 10 times If she spins the spinner a 20th time what is the theoretical probability that this tim class=