Wipro Company Numerical Ability Permutation and Combination

In a group of 15 students, 7 student have studied Latin, 8 students have studied Greek, and 3 have not studied either. How many of these studied both Latin and Greek
A. 3
B. 5
C. 4
D. 0
E. 2

Read Solution (Total 2)

N(A* n B*)=nU - nA- nB+ n(AnB) wher A* is compliment..ie P(A)*=1-p(A)

3= 15- 8- 7+ X

thus X=3
11 years agoHelpfull: Yes(1) No(0)

here 7 studies Latin
8 studies Greek
3 have not study Latin and Greek
so 15-3=12 studies both Latin and Greek
12P7 / 12P8 =1/5 studies both Latin and greek
15*1/5=3 students

Ans. A
6 years agoHelpfull: Yes(0) No(0)

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