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Think of a Number

BBC One
on BBC One London

with Johnny Ball
This week Johnny asks What Does Exactly Mean Exactly? Also he finds out how to measure a metre, what keeps a marching soldier in line when he puts his best foot forward and how a laser gets the measure when spying on a locked room.
Written by JOHNNY BALL Producer JOHN SMITH
Series producer ALBERT BARBER

Contributors

Unknown:
Johnny Ball
Written By:
Johnny Ball
Producer:
John Smith
Producer:
Albert Barber
Source: Radio Times

BBC One London

About BBC One

BBC One is a TV channel that started broadcasting on the 20th April 1964. It replaced BBC Television.

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