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If mean of a, b, c, is M and ab + bc + ca = 0, n mean of a2, b2, c2 is -


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This Chapter Averages-Aptitude-Questions consists of the following topics

A student was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and x. He found mean to be 12. What should be the number in place of x?

If mean of a, b, c, is M and ab + bc + ca = 0, n mean of a2, b2, c2 is -

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?

If the mean of a

b

c

is M and ab + bc + ca = 0

then the mean of a<sup>2</sup>

b<sup>2</sup>

c<sup>2</sup> is -

Averages Aptitude Questions

Arithmetic-Aptitude