Let p be a prime number between 40 and 60. What is the probability that p + 20 is also a prime number? Express your answer as a common fraction.

41 43 47 53 59 >>>Total= 5 primes between 40 and 60

41 + 20 =61 is prime

43 + 20=63 not prime

47 + 20 =67 is prime

53 + 20 =73 is prime

59 + 20 =79 is prime.

Probability = 4 / 5