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If average of two numbers, x and (1)/(...

If average of two numbers, x and ` (1)/(x) ` (where ` x ne 0` ) is A ,what will be the average of ` x^(3) and (1)/( x^(3))`

A

`4A^3-4A`

B

`4A^3-A`

C

`4A^3-2A`

D

`4A^3-3A`

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CHAMPION PUBLICATION-2014 TIER-II PAPER(18)-EXERCISE
  1. The average of 20 numbers is calculated as 35. It is discovered later ...

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  2. Of three numbers, the first is 4 times the second and 3 times the thir...

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  3. If average of two numbers, x and (1)/(x) (where x ne 0 ) is A ,wha...

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  4. The average weight of A B and C Is 45 kg. If the average weight of A a...

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  5. In a team of 10 persons, nine persons spent Rs 40 each for their meal ...

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  6. By selling 20 metres of cloth a man gains the selling price of 4 metre...

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  7. Pratap buys a watch at 4/5 ofits marked price and sells it for 17% mor...

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  8. The profit obtained by selling an article for 625 is same as the loss ...

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  9. Ten articles bought at Rs 8, and sold at 8 for Rs10. Then the gain per...

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  10. A merchant bought 200 eggs, out of which 38 eggs were broken. He sold ...

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  11. A man sold an article at a gain of 5 %. A sold it for Rs. 240 more, he...

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  12. 25% of annual salary of A is equal to eighty percent of annual salary ...

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  13. Two numbers are less than a third number by 30% and 37% respectively. ...

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  14. A reduction of 20% in the price of sugar enables a purchaser to obtain...

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  15. Of the 1000 inhabitants tin a town 60% are males of whom 20% are liter...

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  16. P and Q starting simultaneously from two different places proceed towa...

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  17. A man walks from his house at an average speed of 5km per hour and rea...

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  18. A man can row 15 km per hour downstream and 9 km per hour upstream. Th...

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  19. A is twice as fast as B and B is thrice as fast as C is. The journey c...

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  20. A man took some loan from a bank at the rate of 8% compound interest p...

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