book
Maths Puzzle
Numerical Ability
solve:
20 over x = 20 over x-4 + 4 over x
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book Other Question
"W-e Aaron,Brian and clyde- each have some children."
1. Aaron has at least one girl and twice as many boys as girls.
2. Brian has at least one girl and three times as many boy
when given a number of points (i.e 2) the number of lines to join the points is 1. 3 points require 3 lines, 5 points require 10 lines. how would i express this in an algebraic f