From 925 students French is studied by 343 students, Russian - 459, Polish - 579.
248 students study both French and Russian, and 176 - French and Polish.
None of these three languages are studied by 179 students, and 81 students study all three languages.
How many students study both Russian and Polish?
O1 210; O2 292; O3 120; O4 60; O5 163; O6 165; O7 280.
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.