exam Maths Puzzle Numerical Ability

A man spends $1.60 for thirty stamps, getting some 5 cent stamps and some 4 cent stamps. How much of each kind does he buy?

Read Solution (Total 0)

exam Other Question

Given: Trapezoid ABCD with segment EF drawn horizontaly across the trapezoid, with E on segment AD and F and segment BC.
Segment AB is parallel to segment EF is parallel to consider the sequence -1, 2 , -3 , 4 , -5 ,. . . . -299, 300 . what is the average of this sequence of 300 numbers ?