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Q: The average of 39 numbers is zero. How many of those numbers can be greater than zero?
  • A.
  • B. 38
  • C. 20
  • D. 39
Correct Answer: Option B - Since the average of 39 number is zero. So maximum 38 number can be greater than zero where as 39th number should be such that the sum is zero i-e negative.
B. Since the average of 39 number is zero. So maximum 38 number can be greater than zero where as 39th number should be such that the sum is zero i-e negative.

Explanations:

Since the average of 39 number is zero. So maximum 38 number can be greater than zero where as 39th number should be such that the sum is zero i-e negative.