Question

What is the probability that a randomly chosen two-digit positive integer is a multiple of 3?

Answer 1

2-digit positive integers are 10, 11, 12, ..., 99.

Thus, there are 90 such numbers.

Since out of these, 30 numbers are multiple of 3

Therefore, the probability that a randomly chosen positive 2-digit integer is a multiple of 3 is `30/90 = 1/3`.