Go Figure: The week in numbers

Look back at the week in numbers with our Go Figure images, which are posted daily on social media.

Monday: Oil price slide and sanctions 'cost Russia $140bn'

Tuesday: Wizard of Oz and Casablanca memorabilia fetches millions at auction

Wednesday: The unlikely battlegrounds on which World War One were fought

Thursday: How world's worst Ebola outbreak began with one boy's death

Friday: Shocking scenes as Britain catches US 'Black Friday' fever

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