Sir i am stuck for this question

Decide which method (theoretical, relative frequency, or subjective) is appropriate, and compute or estimate the following probability Randomly meeting someone with a phone number that ends in 7, 8 or 9 The method should be used. The | ting someone with a phone number that ends in 7, 8 or 9 is (Type subjective raction.) relative frequency theoreticalDecide which method (theoretical, relative frequency, or subjective) is appropriate, and compute or estimate the following probability. Randomly meeting someone with a phone number that ends in 7, 8 or 9 The method should be used. The probability of randomly meeting someone with a phone number that ends in 7, 8 or 9 is (Type an integer or a simplified fraction.)