Question

A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at a random from the box, find the probability that it bears a number divisible by 7

Answer 1

Answer:

Step-by-step explanation:

What are all the numbers divisible by 7?

7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77 and 84

There are 12 numbers between 1 and 90 that are divisivle by 7.

That means the probability is 12/90.

If you have to simplify it, then it will be 2/15.

Hope this helps!

Answer 2

Answer:4/30

outcomes:7,14,21,28,35,42,49,56,63,70,77,84

Step-by-step explanation:=12/90

=4/30