Figure set probability

The set contains 12 different figures. How many unidentified individual figures do I have to buy to have precisely two complete sets with a 90% probability after unpacking them?

Your answer:



Help us improve! If you spot a mistake, please let let us know. Thank you!







Tips for related online calculators
Our percentage calculator will help you quickly and easily solve a variety of common percentage-related problems.
Do you want to round the number?

You need to know the following knowledge to solve this word math problem:

arithmeticbasic operations and conceptsGrade of the word problem

Related math problems and questions: