Two number `aa n db` aer chosen at random from the set of first 30 natural numbers. Find the probability that `a^2-b^2` is divisible by 3.

Two number a and b aer chosen at random from the set of first 30 natural numbers.Find the probability that a^(2)-b^(2) is divisible by 3 .

Two number a and b are chosen at random from the set of first 30 natural numbers. Find the probability that a^2-b^2 is divisible by 3.

Two numbers a and b are chosen at random from the set of first 30 natural numbers. The probability that a^(2)-b^(2) is divisible by 3 is

Two numbers a and b are chosen at random from the set of first 30 natural numbers. The probability that a^(2)-b^(2) is divisible by 3 is:

If two numbers a and b are-chosen at random from the 1st 30 natural numbers, find the probability that the expresion (a^2 -b^2) is divisible by 3.