Saturday 14 March 2015

Find the empty square box value?

Find the empty square box value?





Solution: 19


Explanation:
C1:  5x2=10,    10-8=2
C2:  7x4=28,    28-10=18
C3:  6x5=30,    30-12=18

Answer:
C4: 4x9=36,     36-17=19

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