Writer and comedian Olga Koch - born in Russia and educated in the UK and USA - joins the Guestimators team this week at their Spotify HQ, and will be tackling questions on:

1) What makes the best makeshift train cutlery

2) What's the hardest and easiest human feat, from climbing Everest to completing a Rubik's Cube in less than 10 seconds

3) How often the British public forgets to brush their teeth annually.

Go and watch Olga live and watch/listen to all here content by visiting www.rocknrolga.com.

To play the quiz every week, head to guestimators.com

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Production Company - Lock It In Studio

Hosts - Andy Bush & Matt Cutler

Producer - Will Nichols

Music - Adam Harrison

Design - Charlie Thomas

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