Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
There are 7 medicines A, B, C, D, E, F, and G. A and B [#permalink]
16 Jun 2005, 20:28
0% (00:00) correct
0% (00:00) wrong based on 0 sessions
There are 7 medicines A, B, C, D, E, F, and G. A and B cannot be used at the same time, otherwise it would produce side effect. How many ways are possible that 3 medicines can be used without producing side effect?