A game has 40 chips, each labeled with a number from 1 through 40. Lisa randomly chooses one chip. What is the probability that she chooses 25 or a multiple of 10?

Question

anonymous · Answer

cool i am gud at this

anonymous · Answer

okay so i think you put 25 plus all the multiples of 10 over 40 then simplify

anonymous · Answer

So.. How Would I Find Tht Out?

anonymous · Answer

okay so wht numbers bettween 1 and 10 are multiples of ten?

anonymous · Answer

Multiple of 10: 10,20,30,40 (4 chances)
Number 25: 25 (1 chance)
Total chances: 5 out of 40 total

anonymous · Answer

If you have equally likely outcomes (AKA 40 different chips), then your probability ends up being:
number of desired outcomes / number of total outcomes

anonymous · Answer

a. 1/400
b. 1/80
c.1/10
d.1/8

anonymous · Answer

There are 5 desired outcomes: 10,20,25,30,or 40
There are 40 possible outcomes: 1-40

desired / total = 5/40
Reduce that fraction.

anonymous · Answer

Thank You ^.^ For All Yall's Help :P