Question

1 less than a number n is less than 11

Answer 1

You know that n has to be subtracted by one so you get n-1. From there you know that it needs to be an inequality so you get
n-1<11
Then you solve and get
n<12

Answer 2

12

Explanation:

If we assign the value of 12 to n,

12 - 1 = 11