Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
The integers from 1 to 100 inclusive are each written on a [#permalink]
16 Oct 2006, 21:27
0% (00:00) correct
0% (00:00) wrong based on 0 sessions
The integers from 1 to 100 inclusive are each written on a single slip of paper and dropped into a jar. If one slip of paper is removed at random, approximately what is the probability that the number on it is neither even nor a multiple of 3
Total multiples of 2 = 50
Total multiples of 3 = 33
Now the numbers which are divisible by both 2 and 3 i.e numbers which are divisible by 6 are counted in the first 50 numbers as well as in the next 33 numbers. So we have to exclude the numbers that are divisible by 6 once from 50+33 =83
So total multiples of 6 =16
So 83-16 =67.
So there are 67 numbers which are either even or multiples of 3.
Why this is not true [#permalink]
17 Oct 2006, 13:46
If we negate this, we get "Even and multiple of 3", we have 16 numbers
(6,12,18,24,30,36,42,48,54,60,66,72,78,84,90,96). So this comes to 16/100. So for the answer (1-16/100=84/100). So why not 83% approx is the answer.I am just confused.Can any one correct me?