Discuss Forum
1. Of the 32 students in a certain class , 15 are in debating club and 20 are in music club. If 10 of the students are not in either club, how many of the students are in only one of the two clubs ?
- A. 5
- B. 5
- C. 5
- D. 5
Answer: Option B
Explanation:
Out of 32
10 are not in either of the clubs
Thus
22 = 15 + 20 -both
Both = 13
Therefore
only music = 15-13 = 2
only Dance = 20 - 13 = 7
Hence 7 + 2 =9
10 are not in either of the clubs
Thus
22 = 15 + 20 -both
Both = 13
Therefore
only music = 15-13 = 2
only Dance = 20 - 13 = 7
Hence 7 + 2 =9
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