Answer: 11/100
Step-by-step explanation:
There are 11 numbers that are less than 12 from 1-11
Which mean there are 11 possibilities of choosing a number less 12 from the 100 cards.
We can write that probability:
P = 11/100
Therefore, the probability of choosing a number less than 12 in a box of 100 cards is 11/100.