JAMB - Mathematics (2016 - No. 31)

The mean of 2-t, 4+t, 3-2t, 2+t and t-1 is

2

t

-t

-2

Explication

Mean = \(\frac{2 - t + 4 + t + 3 - 2t + 2 + t + t - 1}{5}\)

= \(\frac{10}{5}\) = 2

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