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-

Question Number 111001 by ZiYangLee last updated on 01/Sep/20

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

Commented by bemath last updated on 01/Sep/20

\frac{5}{29}

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