The author posted a question in Education
The store sells balloons in four colors. How many ways are there to buy six balloons if all the colors must be among them? and got a better answer
Response from
Response from 0[+++++]
stop it, physmath olympiadist! if you can't solve it yourself, don't solve it at all! you can find it in the internet too!
stop it, physmath olympiadist! if you can't solve it yourself, don't solve it at all! you can find it in the internet too!
Response from 0[+++++]
4+3+2=9
4+3+2=9