Answer:
240/96.
Step-by-step explanation:
250-96 =240 so that's 240/96
I think that 30 bulbs are expected to be defective.
Answer: 
Step-by-step explanation:
Given
Sample space is 
There are 8 element in sample space which indicates the outcome of tossing a coin three times
Probability of obtaining at least one head



Answer:
b=7 b=26 b=25
Step-by-step explanation: