Question

A spinner is divided into 10 equal sections numbered 1 through 10. If the arrow is spun twice, what is the probability the first number will be even and the second number will be odd?

Answer 1

to get this answer, if there are both 5 even and odd numbers it's a 50/50 chance. (theoretically) so, if it is spun twice we have 4 options
Even then Odd
Odd then Even
Odd then Odd
Even then Even
if Even then Odd has a one out of four chance, that is 25 percent.