SSC
Government Jobs Exams
Numerical Ability
Averages
A group of 10 items has mean 6. If the mean of 4 of
these items is 7.5, then the mean of the remaining items
is-
(a) 6.5 (b) 5.5 (c) 4.5 (d) 5.0
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SSC Other Question
If the mean of 3, 4, x , 7, 10 is 6, then the value of x is-
(a) 4 (b) 5 (c) 6 (d) 7
The mean of a set of numbers is x . If each number is
increased by λ, the mean of the net set is-
(a) x (b) x + λ
(c) λ x (d) None of these