Test Index

BECE Mathematics 2015 Paper

Question : 37

Total: 40

13	12	17
$E$	$F$	10
11	16	$G$

Use the magic square above to answer the question below Evaluate

E+G

Validate

Solution:

A square array of numbers, usually positive integers, is called a magic square if the sums of the numbers in each row, each column, and both main diagonals are the same.

The summation of the first row gives 42 , hence the summation of each row, coloumn and diagonals should be 42.

13+12+17=42

13+E+11=42

E+13+11=42

E+24=42

E=42-24

E=18

17+10+G=42

G+17+10=42

G+27=42

G=42-27

G=15

E+G=18+15

E+G=33

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