Binoy111

 Profile Answers by Binoy111 

• Apr 22nd, 2009

 

Let A= Latin = 7
B = Greek = 8
Then, A + B = A (UNION) B + A (INTERSECTION) B
          7 + 8 = 15 - 3(3 NOT STUDIED) + ?
           15 = 12 + ?
            15- 12 = A (INTERSECTION) B
               3 = NO. OF STUDENTS WHO STUDIED BOTH

raj

• Apr 8th, 2012

 

L=7
G=8
Total number of students(U)=15
Number of students who study neither of them (N)=3
draw a simple diagram representing the above situation.
we need to find out L INTERSECTION G.
Thus we have,
L UNION G + N = 15
L UNION G = L + G - L INTERSECTION G = 7 + 8 - L INTERSECTION G
L INTERSECTION G= 7 + 8 +N-15
= 7+8+3-15
= 3

Sudipto Sarkar

• Sep 22nd, 2013

 

total students=15
no of students who dont study=3
no of students who either study Latin or Greek or both=15-3=12 i.e. n(AUB)
no of students who only study latin=7 i.e. n(A) say
no of students who only study greek=8 i.e. n(B) say
so, no of students who study both greek and latin say n(A^B)
applying n(A^B)=n(A)+n(B)-n(AUB)=7+8-12=15-12=3

suman

• Dec 17th, 2014

 

A

anil Shinde

• Dec 12th, 2015

 

3 is the answer

Siva

• Feb 3rd, 2016

 

Ans : 3