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012_G3U2_G3U2_˙—» ¿º 2011.3.22 8:19 PM ˘ ` 12 PDF_In 2540DPI 150LPI T

UNIT

02 Find the Red Ball

Find all the possible numbers that can go into all three red balls.

693 89
76 763
257 29

Explain why you think so.

12
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