One Shot | Chemistry Class 11 | तत्त्वों का वर्गीकरण एवं गुणधर्मों में आवर्तिता | Class 11 Chemistry

Class 11 कैसे करें आसान

Revision of class 11

NCERT Updates - Class 11 th

NCERT Updates - Class 11 th

Class 11 Complete Study Plan

Class 11 Challenges and Distractions

Class 10 Chemistry all Important रासायनिक समीकरण तथा Topic सिर्फ 15 मिनट में

If in a class there are 200 students in which 120 take Mathematics, 90 take Physics, 60 take Chemistry, 50 take Mathematics & Physics, 50 take Mathematics & Chemistry, 43 take Physics & Chemistry and 38 take Mathematics Physics & Chemistry, then the number of students who hace taken exactly one subject is