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The average of 2, 7, 6 and x is 5 and...

The average of 2, 7, 6 and `x` is 5 and the average of 18, 1, 6, `x` and `y` is 10. What is the value of `y` ? (a) 5 (b) 10 (c) 20 (d) 30

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RS AGGARWAL-AVERAGE-All Questions
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  8. The average of X1,\ X2 and X3 is 14. Twice the sum of X2 and X3 ...

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  15. The mean of 1^2,\ 2^2,\ 3^2,\ 4^2,\ 5^2,\ 6^2,\ 7^2 is (a) 10 (b) 2...

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  16. If a ,\ b ,\ c ,\ d ,\ e are five consecutive odd numbers, their ave...

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  17. The average of a non-zero number and its square is 5 times the numb...

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  18. Total of Arun’s marks in Sanskrit and Mathematics together are 80 m...

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  19. The arithmetic mean of the series 1, 2, 4, 8, 16, ..... 2^n is (2^n...

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  20. The average of two numbers is 6.5 and square root of their product ...

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