. Tamara attended a taping of a television talk show with her best friend Tina. There were a total of 124 audience members, and one audience member was randomly selected to play a game for a prize. What is the probability that Tamara or Tina was selected to play the game?

Question

anonymous · Answer

:( no help

lucaz · Answer

you have three options for Tamara or Tina selected, only Tamara, only Tina or both selected.. you have to add these possibilities, now I have to think

anonymous · Answer

thats what i tryed to do i keep getting 1/31

lucaz · Answer

let's see if @danielcb114 can help us

anonymous · Answer

choices are 1/124 1/31 1/62 1/61

anonymous · Answer

If there are 2 people and I only care about 1 being selected, what's the probability? This should be obvious--it would be 50%. 

A good way to solve these is by playing with the numbers, and then work backwards. What would the probability be if the audience was made entirely of Tinas and Tamaras? 100%; or P=1. What would the probability be if the audience only contained 2 people? 100%, or again, P=1. 

Does it make sense for the probability to be the number of people we care about divided by the total number of people? Based on what we've done so far, it does. 

1/2->p=0.5
124/124=1->p=1
2/2->p=1

So, the probability should be 2/124

anonymous · Answer

Which can be reduced to 1/62

anonymous · Answer

so 1/124 ?

anonymous · Answer

oh yeah thanks