There are 10 balls in a bag numbered from 1 to 10. Seven balls are selected at random. How many different ways are there of selecting the seven balls?
Question
Solution 1
This is a combination problem. In mathematics, a combination is a selection of items without regard to the order in which they are selected.
The formula for combinations is:
C(n, r) = n! / [r!(n-r)!]
where:
- n is the total number of items,
- r is the number of items to choose,
- "!" denotes fac Knowee AI is a powerful AI-powered study tool designed to help you to solve study problem.
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