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The average of 20 numbers is zero. Of...

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero? (a) 0          (b) 1       (c) 10       (d) 19

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RS AGGARWAL-AVERAGE-All Questions
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  9. A student was asked to find the arithmetic mean of the numbers 3, 1...

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  13. The average of odd numbers up to 100 is (a) 49      (b) 49.5     (c...

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  14. In a family, the average age of a father and a mother is 35 years. ...

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  15. The average of X1,\ X2 and X3 is 14. Twice the sum of X2 and X3 ...

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  18. If the mean of a ,\ b ,\ c is M and a b+b c+c a=0 , then the mea...

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  19. The average of the two-digit numbers, which remain the same when th...

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  20. Company C sells a line of 25 products with an average retail price ...

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