Elite Training

Fermi Estimation Duel

How many piano tuners are in Chicago? How many tennis balls fit in a school bus? Master the art of order-of-magnitude estimation.

Estimation

Order of magnitude

Quick Math

Back of envelope

Logical Breakdown

Step by step

Consulting

Interview prep

Enrico Fermi famously estimated the strength of an atomic bomb blast by dropping paper scraps. Now it's your turn.

Estimate the answer to the nearest Order of Magnitude.