Did you know? Number of passengers on an Underground train on London's Northern Line (800 ) is 2.5 x Number of skyscrapers in New York City (>150m tall) (317 )
Magnitude:
Multiple: - thousand million billion trillion quadrillion quintillion sextillion septillion 10^27 10^30 10^33 10^36 10^39 10^42
Unit: kilometer meter centimeter millimeter mile yard foot inch
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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