An integer is chosen at random from the first 40 positive integers. What is the probability that the integer chosen is divisible by 6 or 8?

9/40

1/4

11/40

Question

An integer is chosen at random from the first 40 positive integers. What is the probability that the integer chosen is divisible by 6 or 8?



9/40

1/4

11/40

anonymous · Answer

@trindawg

turingtest · Answer

how many of the first 40 positive integers are divisible by 6 or 8?

anonymous · Answer

11/40?

turingtest · Answer

I got a different answer
list out all the multiples of six that are less than 40:
6,12,18....

xapproachesinfinity · Answer

list all the multiples of 6 that are less than 40
and multiples of 8 that are also less than 40
this question is similar to the one you just asked earlier

anonymous · Answer

thnx

xapproachesinfinity · Answer

you gonna use again 
$\huge P(A\cup B)=P(A)+P(B)-P(A\cap B)$