Day 23: Grindstore Advent Calendar

The Big Bang Theory

This competition is now closed.

The Big Bang Theory Competition

Make a big bang with your chance to win some geeky merch!


1 x Prize: One winner will receive two ‘The Big Bang Theory’ t-shirts and two official ‘The Big Bang Theory’ mugs


In ‘The Alien Parasite Hypothesis’, what is revealed to be Sheldon Cooper’s favourite number?

How to Enter

Just email your answer to along with your name and contact details

Closing Date

This competition will end at mid-day on 28th December and the winner will be announced during the afternoon

Check out our awesome range of The Big Bang Theory merch HERE!!!

5 thoughts on “Day 23: Grindstore Advent Calendar

  1. Melissa says:

    73! 🙂

    Sheldon- 73, is the 21st prime number, its mirror 37 is the 12th and its mirror 21 is the product of multiplying, hang on to your hats, 7 and 3. Did I lie?

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