Im lost need help

Question

I am greater than 8.I am less than 10.what number am I?

Answer 1

Let's call our unknown number x. x is some number greater than 8 and also less than 10. We can express him this way:

8 < x (because we know x is greater than 8)

x < 10 (because we know x is less than 10)

Combining these two guys together, we get:

8 < x < 10

So x is a number between 8 and 10. The only number that is between 8 and 10 is:

9