For example, if it's true that it's raining, and it's true that I'm inside, then it's true that it's raining, and I'm inside.
Formally:
A B ∴ ( A ∧ B )
... to 24, 33.6% from 25 to 44, 20.6% from 45 to 64, and 9.6% who are 65 years of age or older. The median age is 35 years. For every 100 females there are 96.9 males. For ...