Question

a box contains 18 blue flashlights, 3 red flashlights, 7 silver flashlights, and 2 black flashlights. the flashlights are identical in size and shape. if one flashlight is chosen at random, what is the probability that the flashlight will be either blue or black?
1/3
1/2
3/5
2/3

Explanation:

Step1: Calculate total number of flashlights

$18 + 3+7 + 2=30$

Step2: Calculate number of blue or black flashlights

$18+2 = 20$

Step3: Calculate the probability

The probability $P=\frac{20}{30}=\frac{2}{3}$

Answer:

$\frac{2}{3}$