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The average of x1,\ x2,\ x3 and x4 is...

The average of `x_1,\ x_2,\ x_3` and `x_4` is 16. Half the sum of `x_2,\ x_3,\ x_4` is 23. What is the value of `x_1` ? (a) 17 (b) 18 (c) 19 (d) 20

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

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  3. The average of x1,\ x2,\ x3 and x4 is 16. Half the sum of x2,\ x...

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  4. If the mean of 5 observations x ,\ x+2,\ x+4,\ x+6 and x+8 is 11, t...

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

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

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

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

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

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  15. Of four numbers whose average is 60, the first is one-fourth of the...

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  16. The average of 4 positive integers is 59. The highest integer is 83...

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  17. The average of 7 consecutive numbers is 20. The largest of these nu...

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  18. The average of five consecutive odd numbers is 95. What is the four...

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  19. A ,\ B ,\ C and D are four consecutive even numbers respectively an...

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  20. The sum of the three consecutive even numbers is 44 more than the a...

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