In the morning a tank cntained 10 litres of water.At lunch time it contained 7 litres of water.What percentage of water was used
1 answer:
You might be interested in
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
Answer:
Please see attached picture for full solution.
