Bruce is going to call one person from his contacts at random. He has 35 total contacts. 15 of those contacts are from his neighborhood. What is the probability he calls a person not from his neighborhood? Write your answer as a simplified fraction .

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

Use a calculator basically