The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?
0
-1
1
None Of These
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1
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The frequency distribution data is given below. If the average age is 17 years, the value of m is
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2
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The average of the first five multiples of 3 is-
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3
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The average of 20 students is 12 years, if the teacher's age is included, average increases by one. The age of the teacher is:
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4
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30 pens and 75 pencils altogether were purchased for Rs. 510. If the average price of a pencil was Rs. 2, what was the average price of a pen ?
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5
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A batsman makes a score of 87 runs in the 17th inning and thus increases his average by 3. Find his average after 17th inning.
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6
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A cricketer scored some runs in his 21st innings, as a result, his average runs increased by 3. If the present average run is 40, how many runs he scored in the final innings?
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7
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The average marks of four subjects is 120. If 33 was misread as 13 during the calculation, what will be the correct average?
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8
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The average of marks in Mathematics for 5 students was found to do 50. Later, it was discovered that in the case of one student the marks 48 were misread as 84. The correct average is :
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9
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A has 50 coins of 10 paise denominations. While B has 10 coins of 50 paise denominations. C has 20 coins of 25 paise denominations while D has 25 coins of 20 paise denominations. The average number of paise per person is :
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10
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The mean high temperature of the first four days of a week is 25°C whereas the mean of the last four days is 25.5°C. If the mean of the whole week is 25.2°C then the temperature of the 4th day is :
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