a box has 20 balls labeled 1-20. what is the probability that the ball chosen is divisible by 4

Question

anonymous · Answer

So you have 20 balls that are labeled 1-20, you first need to find how many of the balls can be divided by 4. Think of the balls by the numbers they are labeled (1-20).

j.f · Answer

3/20?

anonymous · Answer

Not quite.
How many numbers between 1 and 20 can be divided by 4 (including 1 and 20)

j.f · Answer

4/4 ,8/4, 12/4, 16/4, 20/4
5/20= 4?

anonymous · Answer

Yes (5/20), now can you simplify the fraction?

j.f · Answer

yes, 5 is divisible by itself 1 time and 20 is divisible by 5 4 times, 1/4

anonymous · Answer

Yes, so there is a probability that 1 out of every 4 balls chosen will be divisible by 4.

j.f · Answer

got it. Vielen Danke