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Ram spends equal amounts on purchasing t...

Ram spends equal amounts on purchasing three kinds of pens being sold at Rs 5 Rs 10 Rs 15 per piece Average cost of each pen is

A

Rs. 10

B

Rs..(90)/(11)`

C

9

D

none of these

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The correct Answer is:
B
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PATHFINDER-STATISTICS AND MATHEMATICAL REASONING-QUESTION BANK
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  2. A boy goes to school from him home at a speed of x km/hr. and comes ba...

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  3. Ram spends equal amounts on purchasing three kinds of pens being sold ...

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  4. An automobile driver travels from plain to a hill station 120 km dista...

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  5. If a, b, c, are any three positive numbers , then the least value of (...

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  6. The median of the data 13, 14, 16, 18, 20, 22 is

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  7. For a continuous series the mode is computed by the formula

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  8. If mean = (3median - mode)x, then the value of x is

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  9. The mean deviation from median is

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  10. The mean deviation from the median is

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  11. If each observation of a rew data, whose variance is sigma^2 is multip...

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  12. The standard deviation of a variate x is sigma The standard deviation ...

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  13. If mean of 4,7,x,8 is 5 , then the value of x is.

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  14. The S.D of the first n natural numbers is

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  15. The mean and variance of a random variable X having a binomial distrib...

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  16. Which of the following is not a fallacy?

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  17. Which of the following is a tautology? (p being any statement)

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  18. Which of the following is true?

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  19. Which of the following is different from the others?

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  20. Which of the following is different from the others?

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