TCS
Company
Logical Reasoning
Seating Arrangement
In a class 6 students speaks Hindi 15 speaks Tamil 6 speaks Telugu. 2 speaks both Hindi and Tamil and 1 speaks all the three languages then how many students in the class room?
Read Solution (Total 15)
-
- ans=23
hindi=6
tamil=15
telugu=6
Those students speaks only hindi=6-2(from hindi n tamil)-1(from all three)=>3
Those students speaks only telugu=6-1(from all three)=>5
Those students speaks only tamil=15-2(from hindi n tamil)-1(from all three)=>12
total=3+5+12=>20
bt students speaks hindi+tamil=2
and
those speaks all three hindi+tamil+telugu=1
so finaly 20+2+1=23 - 10 years agoHelpfull: Yes(51) No(10)
- 26 members
h speak students=6
telugu speak students=6
tamil speak students=15
hind and tamil=2
1 speaks all three
total students=h+tamil+telugu-(h&tamil)+All three=6+15+6-2+1=26 - 10 years agoHelpfull: Yes(5) No(7)
- 1)use venn diagram make eqns as a+b+d=6 (for hindi) 2)b+c+d=15 (tamil) 3) d+e=6 for (telgu ) 4) b+d=2 (both tamil & hindi) 4) d=1 because it speaks all 3 lang: after solving a=4,b=1,c=13,d=1,f=5 sum= 24 students
- 10 years agoHelpfull: Yes(5) No(2)
- Let no. of students speaking Hindi be h,Tamil be t and Telugu be e
H=6
T=15
E=6
H&t=2
H&t&e=1
Total students=6+15+6-4+2-3+1-1=22
Bcoz students who are speaking any of two or three Lang. get counted twice or thrice respectively when adding the no. of students speaking each Lang. Separately so subtracting
- 10 years agoHelpfull: Yes(3) No(11)
- 23
solving by ven diagram
only hindi=6-2(hindi&tamil)-1(all hindi telgu and tamil)=3
similarly only tamil=15-(hindi and tamil)-1(h&ta&te)=12
only telgu=6-1(h &ta &telgu)=5
now adding 3(h)+12(tal)+5(telgu)+1(h&TA&tel)+2(H&Ta)=23
- 10 years agoHelpfull: Yes(3) No(1)
- answer is 26
as n(a)+n(b)+n(c)-n(a^b)-n(b^c)-n(a^c)+n(a^b^c)=6+15+6-2-0-0+1=26 - 10 years agoHelpfull: Yes(2) No(4)
- ans = 24
note that there 2 students who speak both hindi and tamil and one who speaks all the three languages. The question does'nt say that there are 2 students who speak only hindi and tamil ....
only hindi speaking students=4
only tamil = 13
only telegu =5
all three =1
only hindi n tamil=1
tota 24
- 9 years agoHelpfull: Yes(2) No(0)
- 20
FIRST WE HAVE SEE 2 SPEAK BOTH HINDI AND TAMIL
ONE WILL SPEAK ALL THREE LANG
SO (6-3)+(15-3)+(6-1)=20
- 10 years agoHelpfull: Yes(1) No(8)
- correct answer::::: 23
- 10 years agoHelpfull: Yes(1) No(1)
- total no . of students in the class room=30 my answer is 23
- 10 years agoHelpfull: Yes(1) No(1)
- assming all the students speak at least one of the 3 langs
- 10 years agoHelpfull: Yes(0) No(4)
- 25
P(aubuc)=p(a)+p(b)+p(c)-p(a^b)-p(b^c)-p(a^c)+p(a^b^c) - 10 years agoHelpfull: Yes(0) No(5)
- In a class 6 students speaks Hindi 15 speaks Tamil 6 speaks Telugu. 2 speaks both Hindi and Tamil and 1 speaks all the three languages then how many students in the class room?
- 8 years agoHelpfull: Yes(0) No(1)
- ans=24 100%correct
p(hindi) + p(tamil) + p(telgu) - {p(hindi intersection tamil) + p(hindi intersection tamil intersection telgu)
= 6 +11 +6 -(2 +1)=24 ans - 7 years agoHelpfull: Yes(0) No(0)
- Let us assume the two persons who can speak two languages, speak Hindi and Tamil. The third person then speaks all the three languages.
Tamil – Number of persons who can speak is 6. Only Tamil 6 – 2 – 1 = 3
Hindi - Number of persons who can speak is 15. Only Hindi 15 – 2 – 1 = 12
Gujarati – Number of persons who can speak is 6. Only Gujarati 6 – 1 = 5
Thus the number of persons who can speak only one language is 3 + 12 + 5 = 20
Number of persons who can speak two languages = 2
Number of person who can speak all the languages = 1
Total number of persons = 23. - 2 Months agoHelpfull: Yes(0) No(0)
TCS Other Question