Answer:
Probability = 2/21
Explanation:
Question is not complete.
To solve this question, the following assumptions are made
1. There are 7 tiles
2. The number representation of the tile is as follows;
5,6,7,8,9,20
a.
Given that there are 7 number of tiles and there are 2 picks without replacement
The probability of choosing a number less than 7 is as follows.
From the given data, number of tiles less than 7 is 5 and 6.
For the first pick, the probability is 2/7
For the second pick, the probability is 2/6
Because there are 6 tiles left after the first pick and there are 2 multiples of 4.
So, the probability is calculated as;
2/7 * 2/6
= 2/7 * ⅓
= 2/21