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
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Answered by
8
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!
Answered by
1
Answer:4/30
outcomes:7,14,21,28,35,42,49,56,63,70,77,84
Step-by-step explanation:=12/90
=4/30
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