Latest CGI Aptitude Question SOLUTION: In class of 150 students- 40 passed in physics and chemistry, 40 passed in physics and maths, 30 passed in maths and chemistry and 10 students passed in all three subjects. 1) How

• Placement Papers
• /
• CGI
• /
• Category

CGI Question Papers:

(#M40037919) CGI Category question Keep an EYE

In class of 150 students- 40 passed in physics and chemistry, 40 passed in physics and maths, 30 passed in maths and chemistry and 10 students passed in all three subjects.
1) How many students passed only in maths.
a)40 b)30 c)20 d) indeterminate

2) If no student fail in all three subjects then what is the total no. of student who passed physics only,chemistry only,maths only.
a) 40 b) 50 c) 60 d) indeterminate

plz solve this Q and explain it..thank u

Asked In CGI Prasann Modi (9 years ago)

Unsolved Read Solution (5)

Is this Puzzle helpful?   (17)   (8) Submit Your Solution

Read Solution (5) :

dheeraj  (9 years ago)

it cant be determined.........as we dont know how many students were failed in which subject.

for 2 nd part we use set theory
p(MUCUP)=P(M)+P(C)+P(P)-P(M intersection P)-P(M intersection C)-P(C intersection P)+P(PUMUC)
by solving
p(M)+(C)+P(P)=50

Is this solution Helpfull? Yes (13) | No (4)  

Abhinaya  (9 years ago)

please be clear.. even following ua formulae is not giving correct ans

Is this solution Helpfull? Yes (3) | No   

Madhusudhana  (8 years ago)

here by using venn diagrams we can solve
otherwise probability
let take probability
P(MUPUC)=P(M)+P(C)+P(P)-P(M INSERTION P)-P(M INSERTION C)-p(C INSERSTION P)+p(M INSERTION P INSERTION C)
15O=P(M)+P(C)+P(P)-40-40-30+10
P(M)+P(C)+P(P)=50
THEN BY USING VENN DIAGRAM

P(M)=150-(P(M)+P(C)+P(P)+P(M INSERTION C)+P(M INSERTION P)+P(M INSERTION C INSERTION P))
P(M)=150-(50+40+30+10)
P(M)=20
P(C)=150-(P(M)+P(C)+P(P)+P(M INSERTION C)+P(C INSERTION P)+P(M INSERTION C INSERTION P))
P(C)=150-(50+40+30+10)
P(C)=20
P(P)=150-(P(M)+P(C)+P(P)+P(P INSERTION C)+P(M INSERTION P)+P(M INSERTION C INSERTION P))
P(P)=150-(50+40+40+10)
P(P)=10


THANK YOU

Is this solution Helpfull? Yes (1) | No (4)  

Abhijeet Jain  (7 years ago)

By the help of venn diagram, we can get the answer
1) d) indeterminate
2) c) 60

Is this solution Helpfull? Yes (1) | No (1)  

Anirban Chowdhury  (7 years ago)

1)20 ...apply your sense...if p+c=40 and p+m=40 and m+c=30 so no. of pass in maths would be either 20 or 10 now...options given 20 so 20
2)50 in maths 20 passed...in chemistry 30-20=10 passed and in physics 40-20=20.....so 20+20+10=50

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.