Answer:
10
Step-by-step explanation:
Hope this helps!
Brainliest pls
Have a great day!
Answer:
rest of them (40%)
Step-by-step explanation:
Answer:
the value is 4.
Step-by-step explanation:
Answer:
Therefore the required ways are =190
Step-by-step explanation:
Combination: Combination is the number of selection of items from a collection of items where the order of selection does not matter.
Total number of smartphones =22
Defective phone = 2
Non defective phone = (22-2) =20
The control inspector randomly test 4 smartphones of which 2 are defective.
Non defective phone = 2
The ways to select 2 non defective phone is

The ways to select 2 defective phone is= 
Therefore the required ways are = (190×1) =190