Question

Gareth selected a tile randomly from the set shown below. What is the probability that he selected a yellow tile or a tile with an odd number?
Red tiles: 1, 2, 1, 3, 2, 3, 2, 4, 3, 1. Grey tiles: 2, 3, 1, 2, 3, 4, 1, 4, 1, 2. Blue tiles: 3, 2, 1, 3. Purple tiles: 1, 3, 4, 3, 4, 2, 3, 1, 1, 2, 1, 2, 3, 1, 2, 4, 3, 3. Green tiles: 1, 1, 2, 3, 2, 1, 4, 3. Yellow tiles: 2, 4, 2. Black tiles: 1, 2, 1, 4, 3. White tiles: 1, 3.
a.
7/240
b.
11/20
c.
8/15
d.
19/30

Answer 1

Total tiles = 60.

Odd-numbered tiles: 35 (counting all 1s and 3s).
Yellow tiles: 3 (2,4,2), and none of these are odd.

So number that are yellow or odd = 35 + 3 = 38. Probability = 38/60 = 19/30.

Answer: d. 19/30