in an exam,6 languages were available,only 3 of them have to be opted,4llowing this conditions:
1)students who opted arabic had 2 opt bengali and vice-versa
2)opted arabic, could'nt opt english
3)students opted chinese or german could'nt opt french
now d no of students n opted subjects are as follows:
arabic-70
bengali-70
english-70
chinese-90
german-85
french-35
q1)how many combinations r permitted?
5 6 7 4
q2)total hw many candidates hv appeared in the exam?
140 120 130 380
q3)how many of them have the combination of chinese with german?
15 20 35 70
Q4)how many of them have the combination of bengali with french?
15 20 35 70

• 1. ABG,ABF,ABC,ECG
  2. Totally french opted students are 35,so considering the combination ABF,35 students are with this combination. So A and B has remaining 35.
  Next,consider ECG where E is 70 .So C and G will have remaining 20 and 15.
  Similarly for ABC and ABG.
  ABC-20
  ABG-25
  ABF-35
  CGE-70
  so total 140
  3. 70
  4. 35
  
  
• 7 years agoHelpfull: Yes(0) No(1)