We have the next numbers on the spinner:
1,2,3,4
Now, the prime numbers are:
2,3
Hence, the probability to get a primer number is:
P( prime number) = # of prime numbers/ total # on the spinner.
Then,
P( prime number) = 2/4 = 1/2
Now, the divisor of 14:
1,2
Hence, the probability to get a divisor of 14 is:
P( divisor of 14) = # of divisor / total # on the spinner.
Replacing:
P( divisor of 14) = 2/4 = 1/2
P(prime and divisor of 14) = 1/4
Finally, we need to find the probability of:
P( prime or divisor of 14) = P( prime number)+ P( divisor of 14) - P(prime and divisor of 14) = 1/2 +1/2 -1/4= 3/4 =0.75*100 = 75%
Hence, the P( prime or divisor of 14) is 75%.