1) Given 2<a<3, 5<b<6 Find:

Question

b
a−b

2) Given 2<a<3, 5<b<6 Find:
a/b

Answer 1

2<a<3, 5<b<6 Find:
b: all we know is that 5<b<6
a-b: the smallest difference is when the largest value is subtracted from the smallest value. So,
2-6 < a-b < 3-5
-4 < a-b < -2

the largest quotient is when the largest value is divided by the smallest value. So,

2<a<3, 5<b<6
2/6 < a/b < 3/5

Answer 2

Welcome back, missed your expertise

Answer 3

Glad to be here.
Just got back from 10 days in London and Berlin.