In a coaching class, 100 students clear the SSC exam. 96 Students clear the BANK exam and 79 students clear the RAILWAY exam. 40 students clear both BANK and SSC exam, 20 out of these also clear RAILWAY exam. 46 students only clear bank exam. 50 students only clear SSC exam. How many students only clear the RAILWAY exam?
1
33
2
35
3
39
4
40