Question

The tens digit is missing from the three digit number 8_9. If the tens digit is to be randomly selected from the ten different digits from 0 to 9, what is the probability that the resulting three-digit number will be a multiple of 9?

Answer 1

3/9

Explanation:

So,if they tell you to find a probability between 0-9 you should write down all the numbers from 0-9 and circle the multiples of what they give you.

eg. 0-9 = 0-1-2-3-4-5-6-7-8-9

multiples of 3 = 3,6,9

then you STOP because they said from 0-9

so your answer is going to be 3 out of (the total numbers included) 9

Answer 2

9 times 91 = 819

Explanation: