In a group of 15, 7 can speak spanish , 8 can speak French and 3 can speak neither . What function of the group can speak both Franch and spanish ?
Created: 5 years ago |
Updated: 3 years ago
best des
I = n(S) + n(F) - n ( S n F) + Neither
15 = 7 + 8 - n ( S n F) + 3
n ( S n F) = 3
So, required fraction = 3/15 = 1/5
Md Azizur Rahman
Founder of Satt
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