[" A "2" n digit number starts with "2" and all its digits are prime,then the probability that "],[" the sum of all two consecutive digits of the number is prime is "]

A 2n digit number starts with 2 and all its digits are prime, then the probability that the sum of all 2 consecutive digits of the number is prime is

A 2n digit number starts with 2 and all its digits are prime, then the probability that the sum of all 2 consecutive digits of the number is prime is a. 4xx2^(3n) b. 4xx2^(-3n) c. 2^(3n) d. none of these

A 2n digit number starts with 2 and all its digits are prime,then the probability that the sum of all 2 consecutive digits of the number is prime is a.4xx2^(3n) b.4xx2^(-3n) c.2^(3n) d. none of these

A 2n digit number starts with 2 and all its digits are prime, then the probability that the sum of all 2 consecutive digits of the number is prime is a. 4xx2^(3n) b. 4xx2^(-3n) c. 2^(3n) d. none of these

What is the probability that the sum of any two different single digit natural numbers is a prime number?

Greatest 2-digit prime number is:

The sum of all two digit odd numbers is :

The sum of all 2 digit odd numbers is