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1. The average of 10 numbers is -10. If the sum of 6 of them is 100, then what is the average of the other 4 numbers?
- A. -100
- B. -100
- C. -100
- D. -100
Answer: Option B
Explanation:
Total of 10 numbers = - 10×10 = - 100
the sum of 6 numbers is 100
so,Sum of last 4 numbers = - 100 - 100 = - 200
∴Average = - 200/4 = - 50 (ans)
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