In a class, 6 students can speak Gujarati, 15 can speak Hindi and 6 can speak Marathi. If two students can speak two languages and one student can speak all the three languages, then how many students are there in the class
1) 21
2) 22
3) 23
4) 24

• n(AUBUC)=6+15+6-2-2-2+1=22
  
• 11 years agoHelpfull: Yes(14) No(3)
• 6+15+6=27
  27-2=25 (two students can speak two languages)
  25-2=23 (1 student can speak 3 languages)
• 11 years agoHelpfull: Yes(5) No(5)
• ans will be 22 using ven diagram also
  
• 11 years agoHelpfull: Yes(3) No(1)
• by vain diag
  ans=23
• 11 years agoHelpfull: Yes(3) No(0)
• 4)24 using van diagram......
• 11 years agoHelpfull: Yes(1) No(6)
• 22 by using a U b Uc
• 11 years agoHelpfull: Yes(0) No(1)
• am not getting it...!
• 11 years agoHelpfull: Yes(0) No(0)
• 24..is the correct ans..
• 10 years agoHelpfull: Yes(0) No(2)
• 24
  by common sense
  
• 8 years agoHelpfull: Yes(0) No(0)
• 27-2-2=23
  2 students speak 2 languages,1 student speak 3 languages.
• 7 years agoHelpfull: Yes(0) No(0)