put two and two together

put two and two together idiom
Draw the proper inference from existing evidence, as in Putting two and two together, it's not hard to guess who will be chosen for the lead role in the play. [Mid-1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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